What is my CPM?
Enter what your ads cost and how many impressions they got to see your CPM. Or enter a CPM to see what a number of impressions will cost, or how many a budget buys.
- CPM
- $10.00
Paying $500.00 for 50,000 impressions is a CPM of $10.00.
CPM: $10.00. Paying $500.00 for 50,000 impressions is a CPM of $10.00.
The results are estimates for information only. They are not financial, tax, or legal advice. Check the numbers with your lender or a qualified professional before you decide. Terms of use
How to calculate
Computes CPM (the cost per 1,000 ad impressions) from the campaign cost and impressions, or the cost or the impressions from the other two.
Example with the default inputs (Campaign cost $500.00, Impressions 50,000): Paying $500.00 for 50,000 impressions is a CPM of $10.00.
Formula: CPM = cost ÷ impressions × 1,000; cost = CPM × impressions ÷ 1,000; impressions = cost ÷ CPM × 1,000.
- Every impression costs the same: the CPM is an average over the campaign.
- Arithmetic is exact on the typed decimals; money shows to the cent and impressions to the whole number, halves up.
Worked examples
Each example is checked against the calculator on every build.
- Campaign cost $15,000.00, Impressions 2,400,000 gives CPM $6.25.Source: Wikipedia, "Cost per mille" (https://en.wikipedia.org/wiki/Cost_per_mille): 15,000 ÷ 2,400,000 = 0.00625
- CPM $6.25, Impressions 2,400,000 gives Campaign cost $15,000.00.Source: Wikipedia, "Cost per mille" (https://en.wikipedia.org/wiki/Cost_per_mille), worked back: 6.25 × 2,400,000 ÷ 1,000 = 15,000
- Campaign cost $15,000.00, CPM $6.25 gives Impressions 2,400,000.Source: Wikipedia, "Cost per mille" (https://en.wikipedia.org/wiki/Cost_per_mille), worked back: 15,000 ÷ 6.25 × 1,000 = 2,400,000
- Campaign cost $1,000.00, Impressions 30,000 gives CPM $33.33.
How it works
CPM is the cost of 1,000 ad impressions. With the campaign cost C, the number of impressions N and the CPM:
- CPM = C ÷ N × 1,000
- Campaign cost C = CPM × N ÷ 1,000
- Impressions N = C ÷ CPM × 1,000
Fill in any two of the three, and the calculator works out the third. If you fill in all three, they must agree.
Rules:
- The cost and the impressions are each more than 0 and at most 1 trillion. The CPM is more than $0 and at most $10,000. A worked-out value outside these limits has no answer.
- The arithmetic is exact on the decimals you type. Money shows to the cent, and impressions to the whole number, with halves rounded up (away from 0).
Assumptions
- The CPM is an average: every impression in the campaign counts the same.
Worked examples by hand
$15,000 for 2,400,000 impressions. CPM = 15,000 ÷ 2,400,000 × 1,000 = 0.00625 × 1,000 = $6.25.
A $6.25 CPM for 2,400,000 impressions. C = 6.25 × 2,400,000 ÷ 1,000 = $15,000.
$15,000 at a $6.25 CPM. N = 15,000 ÷ 6.25 × 1,000 = 2,400,000 impressions.
$1,000 for 30,000 impressions. CPM = 1,000 ÷ 30,000 × 1,000 = 33.333…, shown as $33.33.
Other questions people ask
What does CPM mean?
CPM is the cost per mille, the price of 1,000 ad impressions. Mille is Latin for thousand, and the M in CPM is the Roman numeral for 1,000. An impression is one showing of an ad.
How do I calculate CPM?
Divide the total cost by the number of impressions and multiply by 1,000. A $15,000 campaign with 2,400,000 impressions has a CPM of 15,000 ÷ 2,400,000 × 1,000 = $6.25.
How many impressions will my budget buy?
Divide the budget by the CPM and multiply by 1,000. $500 at a $10 CPM buys 500 ÷ 10 × 1,000 = 50,000 impressions.
How much will a number of impressions cost?
Multiply the CPM by the impressions and divide by 1,000. 100,000 impressions at a $12 CPM cost 12 × 100,000 ÷ 1,000 = $1,200.
What is the difference between CPM and CPC?
CPM is what you pay for 1,000 showings of an ad, whether or not anyone clicks. CPC (cost per click) is what you pay for each click. Divide the cost by the clicks for CPC.
Is CPM the same as RPM?
No. CPM is what an advertiser pays per 1,000 impressions. RPM (revenue per mille) is what a publisher or creator earns per 1,000 views after the platform’s share. The YouTube money calculator uses RPM.