CPM Calculator
Calculate advertising Cost Per Mille (CPM) from total cost and impressions. Solve for CPM, total cost, or impressions. Free online tool, no sign-up.
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What is CPM Calculator?
The CPM Calculator is a free online tool that computes advertising Cost Per Mille — the price per 1,000 ad impressions. Enter any two of total cost, CPM, or impressions and the tool instantly solves for the third, giving media buyers, marketers, and publishers a fast way to plan, compare, and report ad spend across channels.
Key Benefits
- Solves for any of the three CPM variables from the other two
- Uses the exact industry-standard CPM formula
- Locale-aware currency formatting (USD or THB)
- Shows the formula and cost per single impression for deeper insight
- 100% client-side — no sign-up, no data leaves your browser
Common Use Cases
- •Media buyers comparing CPM rates across publishers and platforms
- •Marketers planning ad budgets and projecting impression volumes
- •Publishers pricing ad inventory and forecasting revenue
- •Agencies reporting campaign cost efficiency to clients
- •Anyone learning digital advertising metrics for the first time
How to Use the CPM Calculator
- Choose what to solve for: Use the Solve For dropdown to pick CPM, Total Cost, or Impressions — whichever value you want to calculate.
- Enter the known values: Fill in the other two fields (e.g., total cost and impressions when solving for CPM). The target field is disabled.
- Read the result: The missing value appears instantly in the results panel, formatted in your locale currency.
- Copy or reset: Click Copy Summary to share the breakdown, or Reset to restore the defaults.
Key Features
- Solve-for selector: pick CPM, Total Cost, or Impressions and the target field is computed live.
- Real-time recalculation as you type — no buttons needed.
- Locale-aware currency output (USD or THB) based on page locale.
- Shows all three rearrangements of the CPM formula plus cost per single impression.
- One-click copy of a clean CPM, total cost, and impressions summary.