Talk to Us
Free Tool · Paid Ads

CPM Calculator

Get your cost per thousand impressions from ad spend and impressions. Add clicks and conversions to also see click-through rate, effective CPC and cost per conversion. Transparent formula, no email.

Your impression economics
—
Cost per 1,000 impressions
—
Click-through rate
—
Effective cost per click
—
Cost per conversion
Enter your ad spend and impressions to see your CPM.
Make every impression convert with SaaS-focused PPC → No commitment · 30-min paid strategy call · B2B SaaS specialists

What is CPM (cost per thousand impressions)?

CPM is the price you pay for one thousand ad impressions. It is the base unit of awareness and demand-generation buying, but on its own it says nothing about whether a campaign is profitable. A low CPM is worthless if it reaches the wrong people, and a high CPM can be a bargain if it puts you in front of your exact buying committee. Read CPM alongside click-through rate, effective CPC and cost per conversion.

How this calculator works

The formula:

CPM                  = (ad spend ÷ impressions) × 1,000
Click-through rate   = clicks ÷ impressions
Effective CPC        = ad spend ÷ clicks
Cost per conversion  = ad spend ÷ conversions

Clicks and conversions are optional. Add them to turn a simple CPM into a fuller picture of how efficiently your reach turns into pipeline.

What is a good CPM for B2B SaaS?

It varies widely by channel and targeting. Broad display and YouTube CPMs for SaaS often run $2 to $15, while tightly targeted LinkedIn CPMs aimed at senior decision-makers frequently run $30 to $100+. The raw number matters less than the outcome, so judge CPM by the cost per lead it ultimately produces, not by the impression price alone.

How to lower CPM

  • Right-size your audience. Segments that are too narrow get expensive fast; too broad and you waste reach.
  • Raise ad relevance and engagement. Platforms reward engaging ads with cheaper inventory.
  • Rotate creative. Fresh creative fights ad fatigue that quietly inflates CPM over time.
  • Test placements. Different networks and formats price the same audience very differently.

Frequently asked questions

How do you calculate CPM?

CPM = (ad spend ÷ impressions) × 1,000. $5,000 across 500,000 impressions is a $10 CPM. Add clicks for CTR and effective CPC, and conversions for cost per conversion.

What is a good CPM for B2B SaaS?

Roughly $2 to $15 on broad display and YouTube, and $30 to $100+ on tightly targeted LinkedIn. Judge it by downstream cost per lead, not the raw impression price.

What is the difference between CPM and CPC?

CPM is cost per thousand impressions; you pay for reach. CPC is cost per click; you pay for clicks. CPM suits awareness; CPC suits performance. Effective CPC = CPM ÷ (1,000 × CTR).

How can I lower my CPM?

Right-size the audience, improve ad relevance and engagement, rotate creative to beat fatigue, and test new placements, while keeping reach on your ideal customer profile.