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Free online tool · Advertising

CPM Calculator

Calculate cost per thousand impressions and estimate what a campaign budget can buy. No account needed.

Illustrated interface showing the CPM Calculator tool workflow
Illustration of this tool’s workflow. The working controls are directly below.

Calculate your CPM

CPM = advertising spend ÷ impressions × 1,000.

Enter the details above to get started.

How to calculate cost per mille

CPM means the cost of one thousand ad impressions, not one thousand people reached. If a display campaign costs 250 currency units for 100,000 recorded impressions, its CPM is 2.50. A single person can generate multiple impressions.

Use CPM when you want to compare impression-based placements. It says nothing by itself about viewability, clicks, audience suitability or campaign outcomes. Compare inventory quality and campaign objectives too.

Frequently asked questions

Is a lower CPM always better?

No. A lower CPM can buy more impressions, but audience relevance, placement and results may matter more.

Which currency does this tool use?

Any currency. Enter your spend in a single currency; the returned CPM uses that currency.

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