How we calculate this
See methodology- Divide total ad cost by total impressions.
- Multiply the result by 1,000 to convert it into cost per thousand impressions.
CPM Calculator
CPM Calculator
Calculate CPM from ad cost and impressions.
Formula
CPM
(Ad cost / Impressions) × 1000 Worked example
If ad cost is $250 and impressions are 50,000, here is the result.
- Divide cost by impressions: $250 / 50,000 = 0.005.
- Multiply by 1,000 to get CPM.
- CPM is $5.00.
Frequently Asked Questions
What does CPM mean?
CPM stands for cost per thousand impressions. It measures how expensive reach is on an advertising channel.
Is lower CPM always better?
Not always. Lower CPM means cheaper reach, but it does not guarantee better clicks, leads, or sales.
Can I compare CPM across campaigns?
Yes, as long as the campaigns use the same impression definition and similar targeting.
Methodology and Trust Note
See full methodologyThese tools are designed to make the math visible, keep assumptions clear, and give you a practical planning result you can review quickly.
This calculator is for educational and planning purposes only. It does not replace professional financial, tax, accounting, or business advice.