Work out cost per thousand impressions, or the total cost of reaching an audience.
Please do not make financial decisions based on these results.
What is the CPM Calculator?
Work out cost per thousand impressions, or the total cost of reaching an audience. To use the CPM Calculator, enter campaign cost, impressions delivered, target impressions; it returns cpm, cost to reach target impressions, and shows them instantly as you type.
Where the CPM Calculator fits
Work out cost per thousand impressions, or the total cost of reaching an audience. The main figure it returns is the CPM, worked out from the values you enter.
It belongs with the other marketing & saas metrics tools. If you are comparing options or checking a result from another angle, try the CPC and CPM Calculator, Online Marketing Conversion Calculator or the CTR Calculator.
How to use the CPM Calculator
- Enter your numbers. Start with Campaign cost ($), Impressions delivered, Target impressions. Use real figures from your own records where you can. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the CPM, and the cards below show Cost to reach target impressions. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the CPM Calculator using the default values shown in the calculator above:
Inputs
| Campaign cost ($) | 1,800 |
|---|---|
| Impressions delivered | 300,000 |
| Target impressions | 1,000,000 |
Results
| CPM | $6.00 |
|---|---|
| Cost to reach target impressions | $6,000.00 |
With these inputs the calculator returns CPM: $6.00. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Campaign cost ($) from 1,800 to 2,160 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| CPM | $6.00 | $7.20 | +20% |
| Cost to reach target impressions | $6,000.00 | $7,200.00 | +20% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the CPM Calculator reports CPM and cost to reach target impressions. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. The result is only as accurate as the numbers you enter and the formula shown above. It is for information, not financial, tax or legal advice.
Frequently asked questions
What is a typical CPM?
It depends on the platform and audience; display ads often cost a few dollars per thousand impressions.
How do I improve ROAS?
Raise conversion rate or order value, tighten targeting, and cut spend on campaigns that fall below your break-even ROAS.
Which marketing metrics matter most?
Customer acquisition cost, lifetime value, conversion rate, churn and return on ad spend show whether growth is profitable.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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- Customer Retention Rate Calculator
- Conversion Rate Calculator
- CPA Calculator — Cost per Acquisition
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