CPM Chart Calculator
Calculate one missing CPM value, then use the worked scenario table to chart how impressions scale with budget.
Calculate cost per thousand
Use the page when you need CPM math presented as comparable planning scenarios rather than a single isolated result.
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 page when you need CPM math presented as comparable planning scenarios rather than a single isolated result.
Example calculation
At a £5 CPM, £500 buys 100,000 impressions, £1,000 buys 200,000, and £2,500 buys 500,000.
Change either input in the calculator to model a different campaign scenario.
Budget and impression chart at £5 CPM
| Budget | CPM | Estimated impressions |
|---|---|---|
| £500 | £5 | 100,000 |
| £1,000 | £5 | 200,000 |
| £2,500 | £5 | 500,000 |
| £5,000 | £5 | 1,000,000 |
Use the result correctly
- Hold CPM constant when comparing budget scenarios.
- Use separate rows when rates differ by channel.
- Label whether values are forecasts or actual results.
Frequently asked questions
What does cpm chart calculator 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 page when you need cpm math presented as comparable planning scenarios rather than a single isolated result.
What formula does cpm chart calculator use?
CPM = (cost ÷ impressions) × 1,000; cost and impression projections use the rearranged formula.
Is cpm chart calculator free to use?
Yes. The calculator runs in your browser and does not require an account.