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Marketing / CPM Calculator

CPM Calculator

CPM from ad cost and impressions, or use a CPM to find the cost of a campaign or how many impressions a budget buys.
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CPM
$4.00
$0.0040cost per impression
250impressions per $1
Total ad cost$500.00
Impressions125,000
CPM$4.00

Formula: CPM = cost ÷ impressions × 1,000. Each extra 1,000 impressions costs $4.00.

See breakdown

How the CPM calculation works

  1. CPM is the price of 1,000 impressions

    Divide the total cost by the number of impressions and multiply by 1,000. $500 for 125,000 impressions is a $4.00 CPM.

  2. Solve for cost when you know the rate

    Multiply the CPM by impressions and divide by 1,000. 125,000 impressions at an $8 CPM cost $1,000.

  3. Solve for impressions when you know the budget

    Divide the budget by the CPM and multiply by 1,000. A $500 budget at an $8 CPM buys 62,500 impressions.

  4. Compare channels on the same basis

    CPM lets you compare a newsletter sponsorship, a podcast read and a social campaign by what each 1,000 views costs.

Worked example. A campaign costs $500 and delivers 125,000 impressions. $500 ÷ 125,000 × 1,000 = a $4.00 CPM, or $0.0040 per impression.

CPM FAQ

What is cost per mille (CPM) and cost per impression?

Cost per mille is the price of 1,000 ad impressions; cost per impression is that number divided by 1,000. A $12 CPM is $0.012 per impression. This calculator works either way: enter the cost and impressions to get CPM, or a CPM to get the cost.

What is the CPM formula?

CPM = total cost ÷ impressions × 1,000. It is the cost of showing an ad 1,000 times.

How do I calculate impressions from CPM?

Impressions = budget ÷ CPM × 1,000. A $300 budget at a $6 CPM buys 50,000 impressions.

What is a good CPM?

It depends on the platform, audience and season, so compare your CPM with your own past campaigns and with other channels you use. A low CPM is only good if the impressions lead to clicks or sales.

What is the difference between CPM and CPC?

CPM is what you pay per 1,000 impressions; CPC is what you pay per click. CPC = CPM ÷ (CTR × 1,000), so a $5 CPM with a 1% CTR works out to $0.50 per click.

Does CPM mean the same thing in trucking?

No. In trucking, CPM means cost per mile. This calculator covers advertising CPM, the cost per 1,000 ad impressions.

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CPC CalculatorCost per click from ad spend and clicks, or use a CPC to plan the budget or the clicks a budget buys.CTR CalculatorGet your click-through rate from clicks and impressions, or use a CTR to estimate clicks or the impressions you need.ROAS CalculatorGet return on ad spend, ACoS and the break-even ROAS for your margin, and see whether the ads made money after product costs.Conversion Rate CalculatorGet the conversion rate for a website, landing page or sales pipeline, or use a rate to estimate sales or the traffic a goal needs.Customer Acquisition Cost CalculatorWhat it costs to win one new customer from your marketing and sales spend, and how that compares with what they're worth.