11 Best Free Keyword Research Tools for Search Volume and Keyword Difficulty (2026)

The best free keyword research tools are 1. Google Keyword Planner, 2. Semrush’s free Keyword Tool, 3. KWFinder by Mangools, 4. Google Search Console, 5. Google Trends, 6. Moz Keyword Explorer, 7. Ahrefs Webmaster Tools, 8. Ubersuggest, 9. AnswerThePublic, 10. keywordtool.io, 11. Keywords Everywhere.

Each tool trades off two things: how accurate its search volume and keyword difficulty data is, and how many free lookups you get before hitting a daily cap or paywall.

The Best Free Keyword Research Tools Summary

1. Google Keyword Planner: Best for PPC teams and SEO beginners who want free, Google-sourced search volume data.
2. Semrush free Keyword Tool: Best for teams wanting search volume, keyword difficulty, CPC, and intent in one no-signup lookup.
3. KWFinder by Mangools: Best for a beginner-friendly keyword difficulty score with search intent breakdowns on a free daily tier.
4. Google Search Console: Best for site owners who need authoritative first-party performance data.
5. Google Trends: Best for spotting seasonal trends and comparing topic momentum over time.
6. Moz Keyword Explorer: Best for a priority-scored shortlist with keyword difficulty on a small monthly free allowance.
7. Ahrefs Webmaster Tools: Best for verified site owners who want professional backlink and technical SEO auditing at no cost.
8. Ubersuggest: Best for freelancers who want a beginner-friendly all-in-one SEO tool with difficulty scores.
9. AnswerThePublic: Best for content creators who need rapid question-based keyword ideas for blog topics and FAQs.
10. keywordtool.io: Best for un-gated long-tail keyword suggestions across Google, YouTube, and Amazon (no free volume data).
11. Keywords Everywhere: Best for SEO professionals who want keyword data surfaced inline while browsing without switching tools.

What Is a Keyword Research Tool?

A keyword research tool shows you how often people search a term, how hard it is to rank for, and related phrases worth targeting, using search volume, keyword difficulty, and CPC data pulled from Google, browser extensions, or SEO platform indexes.

Free tools split into three jobs: volume and difficulty research (Keyword Planner, Semrush, KWFinder, Moz), first-party performance data on your own site (Search Console), and timing or ideation signals (Google Trends, AnswerThePublic). Most teams run two or three together rather than relying on one.

The Best Free Keyword Research Tools Compared

How We Chose These Tools?

Each tool on this list was evaluated using G2, Capterra, and qualitative signals from SEO practitioner communities on Reddit and LinkedIn. We cross-referenced pricing pages directly rather than relying on aggregator data, and only included tools where the free-tier scope could be independently verified.

The two criteria that carried the most weight: how close the free tier’s search volume and keyword difficulty data comes to what a paid plan shows, and how clearly the tool discloses its daily search cap or credit limit before you hit it. Tools that gate volume data behind vague upgrade prompts without stating the free-tier limit were excluded.

For the full process, every source we use, what disqualifies a tool, our conflict-of-interest handling, and our corrections policy, read our research methodology and editorial policy .

Detailed Comparison of the Best Free Keyword Research Tools

1. Google Keyword Planner

Best for: PPC advertisers and SEO beginners who want free, Google-sourced keyword volume data and bid estimates.

Google Keyword Planner is a free keyword research tool built into Google Ads. It is maintained by Google and draws directly from the same dataset that powers Google’s ad auction system. The tool is positioned primarily for advertisers planning paid campaigns, but it is widely used by organic SEO teams who want volume data from the source.

At a Glance

What it does well: Google Keyword Planner gives you keyword data that comes directly from Google’s own search infrastructure. There is no middleman index, no estimation lag, and no third-party crawl to introduce inaccuracies. For advertisers mapping out campaigns, the combination of volume ranges, historical 12-month trend data, and bid estimates in a single interface is hard to replicate at any price.

• Discover keyword ideas seeded from a keyword phrase or a URL
• Search volume ranges with 12-month historical trend data
• Suggested bid estimates for Google Ads campaign planning

Standout feature: Location targeting down to city level is available at no cost, which makes it particularly useful for SaaS companies targeting geographic verticals or local service businesses assessing regional demand before committing ad budget.

Limitation: The free tier’s most significant constraint is volume precision. Without active ad spend, the tool shows broad ranges such as 10K to 100K rather than exact monthly figures. For organic SEO work where prioritisation depends on precise volume comparisons between competing keywords, those ranges can make it difficult to rank opportunities confidently.

• Exact search volumes are hidden unless you run active ad spend
• Competition metrics reflect paid ad competition, not organic SEO difficulty

Who it’s for: PPC teams building campaign keyword lists and SEO beginners who need credible volume data without paying for a third-party subscription.

Who it’s NOT for: Organic SEO teams who need exact monthly search volumes or keyword difficulty scores to prioritise content investments.

Editor’s read: We recommend this as the default starting point for any SEO beginner; the data quality is unmatched at the price of zero, even if the volume ranges frustrate advanced practitioners.

Pricing

Google Keyword Planner has no paid tier and no subscription fee. It is part of the Google Ads platform, which operates on an advertising spend model rather than a software licence. There is no cost to access the tool itself, as of June 2026. See the Google Ads pricing page for context.

What Users Say

Love: “Direct from Google’s own data: search volume and bid estimates you can trust for paid campaigns.” via G2 . Concern: “Without active ad spend, you only see volume ranges (e.g. 10K to 100K) instead of exact monthly figures.” via G2 .

2. Semrush free Keyword Tool

Best for: Teams who want search volume, keyword difficulty, CPC, and search intent from a single lookup without a paid subscription.

Semrush runs a limited free version of its keyword tools that returns core metrics, search volume, keyword difficulty, CPC, and search intent, for a capped number of daily lookups. It draws on one of the largest keyword databases in the industry, and the free tier is a genuine window into that data rather than a blank teaser wall.

At a Glance

What it does well: Semrush is the closest a free tool gets to a full research workflow in one screen. A single keyword lookup returns volume, a keyword difficulty percentage, CPC, competitive density, and the search intent label (informational, commercial, transactional, navigational), which is enough to triage a keyword before committing content resources.

• Search volume, keyword difficulty, CPC, and intent in one keyword report
• Related and question-based keyword suggestions from a large database
• Intent labels that flag whether a term is commercial or informational

Standout feature: The intent classification on every keyword is the differentiator here. Few free tools tell you whether a term is commercial or informational at a glance, and that label is often the deciding factor in whether a keyword is worth targeting.

Limitation: The free tier caps how many searches and results you see per day, and the full Keyword Magic Tool , bulk exports, and historical trend data all sit behind paid plans that start high relative to the other tools here.

• Daily lookup and results caps limit how much you can research in one session
• Full keyword database, exports, and history require a paid plan from $139.95/mo

Who it’s for: SEO teams and marketers who want the widest set of metrics per keyword on a free tier and may upgrade to Semrush’s paid stack later.

Who it’s NOT for: Budget-conscious solo users who need high daily search volumes for free, or teams that only need question-based ideation.

Editor’s read: Semrush’s free tier gives you more decision-ready data per keyword than anything else on this list; the trade-off is the tightest daily cap and the steepest upgrade price if you outgrow it.

Pricing

Semrush offers a limited free account and paid plans starting at $139.95/mo (Pro, billed monthly). All pricing is as of August 2026. See the Semrush pricing page for current details.

What Users Say

Love: “The keyword database is huge and the intent and difficulty data helps me prioritise what to write next.” via G2 . Concern: “The free version is limited quickly, and paid plans are expensive for a solo user or small team.” via Capterra .

3. KWFinder by Mangools

Best for: Beginners who want a clear keyword difficulty score and search intent read on a low-friction free daily tier.

KWFinder is the keyword research tool inside the Mangools suite, built around an easy-to-read keyword difficulty score. Its free tier allows a small number of searches per day with difficulty scores and search intent breakdowns, which makes it one of the friendliest ways to size up a keyword without a paid subscription.

At a Glance

What it does well: KWFinder makes the keyword difficulty score the centre of the interface, colour-coded from easy to hard, so beginners can judge whether a term is worth chasing in seconds. Each search also returns volume, trend, CPC, and a search intent read, with long-tail suggestions grouped alongside.

• Colour-coded keyword difficulty score on every keyword
• Search volume, trend, CPC, and search intent per query
• Long-tail and question keyword suggestions with SERP preview

Standout feature: The SERP overview attached to each keyword shows the current ranking pages with their authority metrics, so you can see how strong the competition actually is rather than trusting the difficulty number alone.

Limitation: The free tier is limited to 5 searches per day and requires a Mangools account, and full search volume history, larger result sets, and bulk analysis need a paid Mangools plan.

• Free tier capped at 5 searches/day and requires account signup
• History, bulk lookups, and larger result lists need a paid plan

Who it’s for: Beginners, bloggers, and small teams who want a readable difficulty score and intent read without learning a heavier platform.

Who it’s NOT for: Enterprise teams needing high-volume research, or anyone who wants completely un-gated free access with no account.

Editor’s read: KWFinder is the friendliest keyword difficulty tool on this list; the 5-search daily cap is tight, but the difficulty score and SERP overview make each search count for beginners.

Pricing

KWFinder is sold as part of the Mangools suite with a free tier and paid plans starting at $29/mo (Entry, billed monthly). All pricing is as of August 2026. See the Mangools pricing page for current details.

What Users Say

Love: “The keyword difficulty score is the clearest I’ve used, and the interface makes research approachable for a beginner.” via Capterra . Concern: “The free tier’s 5 searches a day runs out fast when you’re building a full keyword list.” via G2 .

4. Google Search Console

Best for: Website owners who need authoritative, first-party data on how their own site performs in Google Search.

Google Search Console is a free web tool from Google that shows you how your verified properties perform in Google Search. It covers everything from which queries drive clicks and impressions to Core Web Vitals scores and indexing errors. For understanding what keywords your site already ranks for, there is no more reliable source.

At a Glance

What it does well: Search Console delivers performance data that no third-party tool can replicate because it comes directly from Google’s index. The Performance report breaks down clicks, impressions, CTR, and average ranking position by query, page, country, and device. That granularity is genuinely useful for identifying quick-win keyword opportunities where you rank on page two with strong impressions but low CTR.

• Performance report showing clicks, impressions, CTR, and average ranking position by query
• URL Inspection tool for checking crawl, index, and rendering status
• Core Web Vitals and page experience monitoring

Standout feature: The Coverage report flags indexing errors and excluded pages with specific error codes, which makes it the fastest way to find and fix pages Google is refusing to index. For technical SEO work, this is the diagnostic layer that paid tools approximate but do not replace.

Limitation: Search Console only shows data for your own verified properties. If you need to research competitor keyword strategies or identify untapped keyword opportunities beyond your current rankings, you will need an additional tool alongside it.

• Data is delayed up to 2 to 3 days; not suitable for real-time monitoring
• 16-month maximum data retention; no long-term historical export beyond that window

Who it’s for: Any website owner or SEO professional who needs authoritative data on their own site’s organic search performance, indexing health, and Core Web Vitals.

Who it’s NOT for: Teams who need competitive keyword research, historical data beyond 16 months, or real-time ranking updates.

Editor’s read: If you only install one tool from this list, make it Search Console; the data quality and depth are unmatched for understanding your own site, and the cost is zero.

Pricing

Google Search Console is completely free with no paid tier and no usage caps. It requires verifying ownership of the property you want to monitor. As of June 2026, there is no subscription model. See the Search Console page for setup instructions.

What Users Say

Love: “A direct line to Google: I can see exactly what queries people used to find my site.” via Capterra . Concern: “Data updates are delayed by 2 to 3 days and historical data retention is limited to 16 months.” via G2 .

5. Google Trends

Best for: Content strategists and marketers who need to spot seasonal trends, validate content timing, and compare topic momentum.

Google Trends is a free Google tool that shows the relative search interest for any topic over time, broken down by geography and compared across up to five terms simultaneously. No account is required to use it. It is designed for trend discovery and topic comparison rather than precise volume measurement.

At a Glance

What it does well: Google Trends excels at answering timing questions. Whether a topic is growing, shrinking, or seasonal is immediately visible from the trend line. For content teams planning editorial calendars or deciding whether to prioritise a topic now versus in three months, the relative interest scores over custom date ranges are genuinely useful signals.

• Relative search interest trend lines over custom date ranges
• Geographic breakdown of interest by country, region, or city
• Compare up to 5 search terms or topics side by side

Standout feature: The “Related queries” and “Breakout” sections surface rising search terms before they reach peak volume. For SaaS SEO teams looking to publish ahead of a trend rather than chasing it, this is the most useful free signal available anywhere.

Limitation: Google Trends reports relative interest on a 0 to 100 scale, not absolute monthly search volumes. You cannot size a niche or compare two keywords on the same absolute scale. For anything beyond directional trend validation, you will need a volume-focused tool alongside it.

• Shows relative interest scores (0 to 100), not absolute monthly search volumes
• Data for niche or low-volume topics is sparse and unreliable

Who it’s for: Content strategists and marketing teams who need to validate timing decisions, spot emerging topics, and compare topic trajectories before investing in content production.

Who it’s NOT for: SEO teams who need absolute search volume figures to prioritise keyword lists or size market opportunities.

Editor’s read: We use Trends specifically for timing validation and spotting breakout terms; treat it as a directional signal layer, not a volume measurement tool.

Pricing

Google Trends is completely free with no paid tier, no account requirement, and no usage limits. As of June 2026, the tool remains openly accessible at trends.google.com .

What Users Say

Love: “Really intuitive: interesting insights into trending topics in just a few clicks.” via Capterra . Concern: “Only shows relative popularity, not absolute search volumes: hard to size a niche precisely.” via G2 .

6. Moz Keyword Explorer

Best for: Teams who want a priority-scored keyword shortlist with keyword difficulty on a small monthly free allowance.

Moz Keyword Explorer is Moz’s keyword research tool, built around a Priority score that combines volume, keyword difficulty, and organic click-through-rate potential into one number. A free Moz account unlocks a limited monthly allowance of keyword queries, which makes it a good tool for shortlisting a handful of high-value keywords rather than bulk research.

At a Glance

What it does well: Moz’s Priority score is the standout idea: instead of forcing you to weigh volume against difficulty against click potential yourself, it rolls them into one 0 to 100 number so you can rank a keyword list quickly. Each keyword also comes with a difficulty score, SERP analysis, and organic CTR estimate.

• Priority score combining volume, difficulty, and organic CTR potential
• Keyword difficulty score and SERP analysis per keyword
• Keyword suggestions grouped by topic and question

Standout feature: The organic CTR estimate flags keywords where features like ads, snippets, or packs eat the clicks, so a high-volume term with low real click potential gets caught before you invest in it.

Limitation: The free allowance is a small number of queries per month and needs a Moz account, and the full Keyword Explorer, list building, and tracking sit inside Moz Pro. Difficulty and volume data can also skew on very low-volume niche terms.

• Monthly free-query allowance is limited; sustained research needs Moz Pro
• Data on very low-volume niche terms is thinner than on head terms

Who it’s for: SEO teams who want a fast, scored shortlist of a few high-value keywords and may already use Moz Pro for tracking.

Who it’s NOT for: High-volume researchers who need hundreds of free lookups, or beginners who want a completely un-gated tool.

Editor’s read: Moz Keyword Explorer is the best free tool for scoring and prioritising a short keyword list; the tight monthly allowance means it works best as a decision layer, not a bulk research engine.

Pricing

Moz Keyword Explorer offers a limited free allowance and full access through Moz Pro, which starts at $49/mo (billed annually). All pricing is as of August 2026. See the Moz Pro pricing page for current details.

What Users Say

Love: “The Priority score saves me from second-guessing which keywords to target; it bundles the whole decision into one number.” via G2 . Concern: “The free allowance runs out fast, and the paid plans feel pricey once you need real query volume.” via G2 .

7. Ahrefs Webmaster Tools

Best for: Site owners who want professional-grade backlink and technical SEO auditing for their own verified domains at no cost.

Ahrefs Webmaster Tools is a free tier of the Ahrefs platform restricted to verified site owners. It includes a scaled-down version of Ahrefs’ Site Explorer for backlink and organic keyword data, a Site Audit for technical health scoring across 170-plus issue types, and privacy-focused Web Analytics. Ahrefs is an established SEO platform with a large backlink index and a strong reputation among professional SEO practitioners.

At a Glance

What it does well: The free tier gives verified site owners access to professional-grade backlink data and technical auditing that would cost money on almost any competing platform. The Site Audit produces a Health Score and flags specific issue categories with clear explanations, which makes it useful for identifying quick technical wins without needing to read documentation.

• Site Explorer shows organic keywords and backlinks for your verified domain
• Site Audit scans for 170-plus technical and on-page SEO issues with a Health Score
• Web Analytics provides privacy-focused traffic data without cookies

Standout feature: The Site Audit crawl with 5,000 credits per month is more thorough than what most free tools offer. For technical SEO teams managing a single domain, the issue categorisation and prioritisation guidance inside the audit gives you clear fixes to work through, beyond raw diagnostics.

Limitation: The free tier’s 500 total Site Explorer credits is a hard cap that depletes quickly during active research. Once credits are exhausted, the tool reverts to audit-only functionality. Keyword Explorer, which covers competitive research on any domain, is locked entirely behind paid plans.

• Free tier caps Site Explorer at 500 total credits; not enough for ongoing research
• Keyword Explorer for competitive research is locked behind paid plans

Who it’s for: Site owners who need professional backlink monitoring and technical SEO auditing for their own domains and can work within the credit constraints of the free tier.

Who it’s NOT for: Teams who need competitive keyword research across multiple domains or ongoing high-volume keyword discovery.

Editor’s read: The best free technical SEO audit tool available; the credit cap on Site Explorer is a genuine constraint, but the audit capabilities alone justify the signup.

Pricing

Ahrefs Webmaster Tools is free for verified site owners with no time limit. Paid plans start at $129/mo (Lite, billed monthly). All pricing is as of June 2026. See the Ahrefs pricing page for full plan details.

What Users Say

Love: “Best backlink tool with great free webmaster features: data is super fresh and spots real link-building opportunities.” via G2 . Concern: “For small businesses just starting out, the paid plan cost is hard to justify.” via Capterra .

8. Ubersuggest

Best for: Freelancers and small business owners who need an affordable, beginner-friendly all-in-one SEO tool with a usable free tier.

Ubersuggest is an all-in-one SEO tool built by Neil Patel Digital. It covers keyword research , domain overview, site auditing, and rank tracking in a single interface aimed at users who are newer to SEO. It is available as both a web app and a Chrome extension, with the extension providing inline keyword data on Google SERPs.

At a Glance

What it does well: Ubersuggest presents keyword data, site health, and rank tracking in an interface that is genuinely approachable for users without a deep SEO background. The Chrome extension surfaces volume, CPC , SEO difficulty, and paid difficulty scores directly on Google search results pages, which reduces context switching during research.

• Keyword ideas with search volume, SEO difficulty, CPC, and paid difficulty scores
• Domain overview showing estimated organic traffic and top ranking pages
• Chrome extension showing keyword metrics directly on Google SERPs

Standout feature: The domain overview screen gives a quick snapshot of any domain’s estimated organic traffic, top-ranking pages, and keyword distribution. For freelancers doing a first-pass competitor audit before a client pitch, this single screen covers the essentials without requiring a separate tool.

Limitation: The free tier’s 3-search daily limit is restrictive for anyone trying to build out a keyword list in a single session. Data accuracy for backlinks and traffic estimates is also weaker than what Ahrefs or Semrush produce, which becomes more noticeable as research complexity increases.

• Free tier is limited to 3 searches/day; restrictive for regular research workflows
• Data accuracy for backlinks and traffic estimates is weaker compared to Ahrefs or Semrush

Who it’s for: Freelancers and small business owners who want a single tool that covers keyword research, site auditing, and rank tracking at an accessible price point.

Who it’s NOT for: SEO professionals who need high data accuracy, large export volumes, or deep backlink analysis for client reporting.

Editor’s read: Ubersuggest is a reasonable starter tool for solo practitioners, but the 3-search free limit means it functions more as a demo than a functional free tier.

Pricing

Ubersuggest offers a free plan and paid plans starting at $29/mo (Individual, billed monthly). All pricing is as of June 2026. See the Ubersuggest pricing page for current details.

What Users Say

Love: “User-friendly interface and simple design: intuitive and easy to navigate for beginners.” via Capterra . Concern: “Limited export options make it hard to share large keyword datasets with clients.” via Capterra .

Weighing Ubersuggest? Our Ubersuggest reviews page collects its G2, Capterra and Trustpilot scores.

9. AnswerThePublic

Best for: Content creators and bloggers who need rapid question-based keyword ideas to fuel blog topics and FAQ sections.

AnswerThePublic is a keyword visualisation tool that organises search queries into structured categories: questions, prepositions, comparisons, and alphabetical variants. It was acquired by Neil Patel Digital in 2022. The tool is built specifically for content ideation rather than full keyword research, and it surfaces the conversational phrasing people actually use when searching.

At a Glance

What it does well: AnswerThePublic produces a full map of how people phrase searches around a topic in seconds. The visual output groups queries by question type (who, what, when, where, why, how), preposition variations, and direct comparisons, which is a faster starting point for content briefs than manual SERP research. The CSV export makes it straightforward to pass keyword clusters to a writer or content strategist.

• Visual keyword map organising search queries by questions, prepositions, comparisons, and alphabetical
• Question-based keyword discovery covering who, what, when, where, why, how
• CSV export of keyword clusters for use in briefs and planning documents

Standout feature: The comparison cluster reveals how users contrast your topic against alternatives or substitutes. For content marketing teams building comparison and versus pages, the comparison output provides a structured starting inventory rather than requiring manual search pattern research.

Limitation: AnswerThePublic does not provide organic difficulty scores, search volume data, or SERP analysis on any plan. It is a content ideation tool, not a keyword prioritisation tool. Free users are also limited to 3 searches per day, which limits how quickly a team can explore a topic cluster.

• Free tier capped at 3 searches/day; no search volume data on any free results
• No organic ranking difficulty scores or SERP data; purely a content ideation tool

Who it’s for: Content creators, bloggers, and content marketers who need structured question-based keyword ideas to plan editorial calendars and FAQ sections.

Who it’s NOT for: SEO teams who need volume data, difficulty scores, or SERP-level competitive analysis to prioritise keyword investments.

Editor’s read: Genuinely useful for content ideation in a narrow, specific way; the 3-search daily limit makes the free tier feel stingy, but a single search for a broad topic can yield enough ideas for weeks of content planning.

Pricing

AnswerThePublic offers a free plan and paid plans starting at $20/mo (Starter, billed monthly), with lifetime options available. All pricing is as of June 2026. See the AnswerThePublic pricing page for current details.

What Users Say

Love: “Ridiculously easy to use: hundreds of pre-made question queries appear instantly from a single search.” via Capterra . Concern: “Free plan is very limited at 3 searches/day; paid tiers can feel pricey for individual users.” via Capterra .

10. keywordtool.io

Best for: Fast, un-gated long-tail keyword suggestions across Google, YouTube, Amazon, and Bing when you don’t need volume data.

keywordtool.io generates keyword ideas by pulling autocomplete suggestions from Google, YouTube, Amazon, Bing, and other platforms. The free version returns a large list of long-tail suggestions without an account, but it withholds search volume, CPC, and competition data unless you upgrade to a paid plan.

At a Glance

What it does well: keywordtool.io is fast at one job: turning a seed term into a long list of real autocomplete phrases across search engines and marketplaces. Because it pulls from platform autocomplete, the suggestions reflect phrasing people actually type, and the multi-platform coverage (YouTube, Amazon, Bing) is wider than most free tools.

• Long-tail keyword suggestions from Google, YouTube, Amazon, Bing, and more
• No account required to generate the free suggestion list
• Question and preposition keyword variants for content ideation

Standout feature: The multi-platform coverage is the differentiator: a single seed term returns separate suggestion sets for YouTube and Amazon, which is useful for video and marketplace research that Google-only tools miss.

Limitation: The free tier gives you the keyword list but hides search volume, CPC, trend, and competition data behind a paid plan, so you can’t prioritise the suggestions on the free version. The verified review base is also thin (19 G2 reviews), so triangulating on reliability is harder than with larger tools.

• No search volume, CPC, or competition data on the free tier
• Thin verified review base (19 G2 reviews) limits confidence

Who it’s for: Content and video creators who need a wide net of long-tail phrasing ideas across platforms and will prioritise them with a separate volume tool.

Who it’s NOT for: Anyone who needs search volume or difficulty data for free, or teams wanting a deep verified review base before committing.

Editor’s read: keywordtool.io is a quick, un-gated idea generator with unusually wide platform coverage; treat it as an ideation feeder for a volume tool, since the free tier shows phrases but no metrics to rank them by.

Pricing

keywordtool.io offers a free suggestion-only tier and paid plans starting at $89/mo (Pro Basic, billed annually). All pricing is as of August 2026. See the keywordtool.io pricing page for current details.

What Users Say

Love: “Pulls long-tail keyword ideas from YouTube and Amazon, not just Google, which is rare in a free tool.” via G2 . Concern: “The free version won’t show search volume, so you have to pay to actually prioritise the keywords it finds.” via G2 .

11. Keywords Everywhere

Best for: Bloggers and SEO professionals who want keyword data surfaced passively while browsing, without switching between tools.

Keywords Everywhere is a browser extension for Chrome and Firefox that overlays keyword data directly on Google, YouTube, Amazon, Bing, and other platforms as you browse. There is no standalone web app; the tool functions entirely as an extension. It operates on a credit-based model rather than a monthly subscription, and credits do not expire within a year of purchase.

At a Glance

What it does well: Keywords Everywhere eliminates the workflow friction of switching between a browser and a keyword tool. Search volume, CPC, competition, and related keyword suggestions appear inline on the SERP without any additional steps. For researchers who do keyword work embedded in normal browsing sessions, the passive data overlay is a significant productivity improvement.

• Overlays search volume, CPC, and competition data directly on Google, YouTube, Amazon, and Bing SERPs
• Trend data and historical monthly search volumes shown inline
• Related keywords, people also search for, and long-tail suggestions on SERP

Standout feature: The website traffic analysis feature provides estimated organic traffic and top keyword reports for any domain you visit. For quick competitor reconnaissance during normal browsing, this removes the need to open a separate tool for a one-off check.

Limitation: Keywords Everywhere has no free tier. The extension installs for free but requires purchased credits to display any keyword data. For high-volume researchers, the credit-based model can become unpredictable, and there is no standalone web app or API access for bulk keyword processing outside of the browser.

• No free tier; all keyword volume data requires purchased credits
• Credit-based model can be unpredictable for high-volume researchers

Who it’s for: Bloggers, content marketers, and SEO professionals who do keyword research as part of regular browsing and want data surfaced in context without switching tools.

Who it’s NOT for: Teams who need bulk keyword processing, API access, or a free option for occasional research use.

Editor’s read: Worth the cost for anyone who does keyword research frequently during normal browsing; the passive inline data saves meaningful time, though the lack of any free tier is a barrier for occasional users.

Pricing

Keywords Everywhere operates on an annual credit-based model rather than a per-month subscription. Plans start at $80/year for 200,000 credits. Credits do not expire within 12 months of purchase. All pricing is as of June 2026. See the Keywords Everywhere pricing page for current details.

What Users Say

Love: “Great customer service and an amazing product: I write more effective blog posts with keyword data always visible.” via Capterra . Concern: “Subscription fee can look pricey at first glance before you see the value compared to alternatives.” via Capterra .

How to Choose a Free Keyword Research Tool

Match the tool to your specific goal rather than picking the one with the most features. Three factors decide the fit.

Data type: Decide what you actually need before you compare tools. Exact search volumes point you to Google Keyword Planner or Semrush; a keyword difficulty score points to KWFinder, Moz, or Ubersuggest; question-based ideas point to AnswerThePublic; seasonal trend direction points to Google Trends; your own site’s real rankings point to Google Search Console.

Usage limits: Check whether the free version is a permanent plan or a capped daily allowance that pushes you toward an upgrade. Search Console and Google Trends are unlimited; Semrush, KWFinder, Ubersuggest, and Moz cap free lookups per day or per month, so heavy research sessions hit the wall fast.

Platform source: Make sure the tool pulls data from the platform you want to rank on. Most tools here target Google web search; keywordtool.io and Keywords Everywhere add YouTube and Amazon coverage, which matters if you’re doing video or marketplace research.

Frequently Asked Questions

1. What are the best free keyword research tools?

The best free keyword research tools are 1. Google Keyword Planner, 2. Semrush’s free Keyword Tool, 3. KWFinder by Mangools, 4. Google Search Console, 5. Google Trends, 6. Moz Keyword Explorer, 7. Ahrefs Webmaster Tools, 8. Ubersuggest, 9. AnswerThePublic, 10. keywordtool.io, and 11. Keywords Everywhere.

2. When should you use a paid keyword research tool instead of a free one?

Upgrade to a paid tool when you hit the free tier’s daily search cap, need exact monthly search volumes instead of ranges, or need keyword difficulty and competitor data across domains you don’t own. Free tools cover your own site and light research well; paid tools cover volume research at scale.

3. Is Google keyword research free?

Yes. Google Keyword Planner and Google Search Console are both completely free. Keyword Planner shows volume ranges (exact figures unlock with active ad spend), and Search Console shows the exact queries your own site already ranks for. Google Trends is free too for seasonality.

4. Is KWFinder free?

KWFinder by Mangools offers a limited free tier of 5 searches per day with keyword difficulty scores and search intent data, but it requires a free Mangools account. Full access to search volume history and bulk lookups needs a paid Mangools plan.

5. Does Google Keyword Planner show exact search volumes for free?

No. Without active Google Ads spend , Google Keyword Planner shows broad volume ranges such as 1K to 10K rather than exact monthly figures. Running even a minimal active campaign will unlock exact volumes.

6. What is the difference between Google Keyword Planner, Ubersuggest, and KWFinder?

Google Keyword Planner gives Google-sourced volume and bid data free but no organic difficulty score. Ubersuggest adds a keyword difficulty score and competitor data with a 3-search daily limit. KWFinder is built around its keyword difficulty score with a 5-search daily free tier.

7. Which free tool is best for content ideation and question-based research?

AnswerThePublic is the most purpose-built option for question-based keyword discovery. It organises queries by question type, preposition, and comparison automatically. For teams managing larger keyword clusters, see 7 Best Keyword Clustering Tools for SaaS in 2026 .

8. Is there a free tool for YouTube keyword research?

None of the tools on this list are YouTube-specific, but Keywords Everywhere’s browser overlay shows YouTube search volume as you browse, and Ahrefs offers a separate free YouTube keyword tool. For dedicated Google web-search research, use Keyword Planner or Search Console.

9. Is Keywords Everywhere actually free?

No. The extension installs for free but requires purchased credits to display keyword data. It is the only tool on this list with no genuinely free tier. If you need inline SERP keyword data at no cost, Google Search Console’s Performance report is the closest alternative for your own site.

10. Can I use these tools together?

Yes, and most SEO teams do. A common workflow combines Google Keyword Planner or Semrush for volume discovery, Google Search Console for ranking gaps on your own site, Google Trends for timing, and KWFinder for difficulty scoring. Each covers a distinct part of the research process.

11. Which tools are best for a SaaS company specifically?

For SaaS keyword research, the combination of Google Search Console (own-site data), Semrush or KWFinder (volume and difficulty), and Google Keyword Planner (volume discovery) covers the core workflow at zero or low cost.

Update History

• August 28, 2026: Added four AIO-named tools as cards, Semrush free Keyword Tool (#2), KWFinder by Mangools (#3), Moz Keyword Explorer (#6), and keywordtool.io (#10), with verified G2/Capterra ratings; renumbered the roster to 11 tools; entity-augmented the title and metas around search volume and keyword difficulty; added “What Is a Keyword Research Tool?” and “How to Choose a Free Keyword Research Tool” sections; numbered the FAQ and added a faqs schema array.
• June 8, 2026: Published.

Ranjeeth Kumar SEO Manager at PipeRocket

Ranjeeth is a B2B SEO specialist focused on building organic growth engines for SaaS companies. As Manager at PipeRocket Digital, he leads SEO strategy across content, technical, and keyword research — helping clients capture high-intent demand and turn organic traffic into measurable pipeline. With a deep understanding of how SaaS buyers search and convert, Ranjeeth builds scalable SEO programs that compound over time.

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