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CPM Calculator

CPM is what you pay for 1,000 ad impressions. Enter your spend and impressions to get the CPM, or switch to Budget or Impressions to plan a campaign from a CPM you already know.

  • Free
  • No sign-up
  • Runs in your browser
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Result

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Enter the numbers above to see the result.

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How to use it

  1. Enter the ad spend and the number of impressions it bought.
  2. Read the CPM: spend divided by impressions, times 1,000.
  3. Planning instead? Choose "Budget" (CPM and impressions) or "Impressions" (budget and CPM).
  4. Add clicks with "Add more numbers" to also get CTR and CPC, then copy a summary or a link to the result.

Examples

  • Campaign CPM

    US$ 250 spent for 50,000 impressions is a CPM of US$ 5.00.

  • Budget from a CPM

    400,000 impressions at a CPM of US$ 3.50 need a budget of US$ 1,400.

  • Impressions from a budget

    US$ 1,000 at a CPM of US$ 8 buys 125,000 impressions.

Questions

What is CPM?

CPM means cost per mille, the cost of 1,000 ad impressions. It is how most display, video and social ads are priced or compared when the goal is to be seen.

How do you calculate CPM?

CPM = ad spend ÷ impressions × 1,000. To plan, turn it around: budget = CPM × impressions ÷ 1,000, and impressions = budget ÷ CPM × 1,000.

What is the difference between CPM and CPC?

CPM prices views (1,000 impressions); CPC prices clicks. With the CTR you can move between them: CPC = CPM ÷ (CTR × 10) when CTR is in percent.

Why do CPMs vary so much?

Platform, country, audience, ad format, season and competition for the same people all move the price. Compare CPMs from similar campaigns rather than a general average.

Is a lower CPM always better?

No. Cheap impressions that nobody clicks or buys from cost more per result. Look at CPC, CPA or ROAS next to the CPM before deciding.

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