CPM Calculator Formula
Enter any two figures to calculate the third while keeping the CPM formula visible for manual checking.
Calculate cost per thousand
Use the formula view to audit a spreadsheet or reproduce the result without the calculator.
Symbols only; values are not converted.
Example values are prefilled—edit either available input.
i
The total amount spent or earned for the impressions in this calculation.i
The number of times the advertisement or placement was delivered.i
Cost per mille: the cost or revenue for every 1,000 impressions.How this calculation works
Use the formula view to audit a spreadsheet or reproduce the result without the calculator.
Example calculation
£875 × 1,000 ÷ 175,000 impressions equals a £5.00 CPM.
Change either input in the calculator to model a different campaign scenario.
Use the result correctly
- Use decimal values for precise spend.
- Do not enter impressions in thousands unless you also adjust the formula.
- Check whether your source reports gross or net cost.
Frequently asked questions
What does cpm calculator formula calculate?
It calculates CPM, total cost, or impressions from any two known values. The page also explains the formula in the context of use the formula view to audit a spreadsheet or reproduce the result without the calculator.
What formula does cpm calculator formula use?
CPM = cost × 1,000 ÷ impressions.
Is cpm calculator formula free to use?
Yes. The calculator runs in your browser and does not require an account.