What does CPM stand for?

CPM stands for Cost Per Mille, where "mille" is Latin for one thousand. It represents the price an advertiser pays for 1,000 ad impressions. It is the most common pricing model in display and programmatic advertising.

What is the CPM formula?

CPM = (Total Budget / Total Impressions) × 1,000. Rearranged: Budget = (CPM × Impressions) / 1,000, and Impressions = (Budget / CPM) × 1,000.

What is a good CPM for digital advertising?

CPM varies widely by channel and audience. Display ads typically range from $1 to $10, Facebook and Instagram from $5 to $15, LinkedIn from $30 to $90, and programmatic video from $10 to $30. Context, targeting, and competition all affect the rate.

Is CPM the same as CPI?

No. CPM (Cost Per Mille) measures the cost per 1,000 impressions. CPI (Cost Per Install) is a mobile-specific metric that tracks the cost for each app installation. They measure different actions.

How is CPM different from CPC?

CPM charges advertisers per 1,000 impressions regardless of clicks, making it ideal for brand awareness. CPC (Cost Per Click) charges only when a user clicks the ad, making it better suited for direct-response campaigns.

Does this tool store my data?

No. All calculations happen entirely in your browser using JavaScript. No data is sent to any server.

How do I convert CPC to CPM?

Multiply cost per click by click-through rate and by 1,000: CPM = CPC × CTR × 1,000. A $0.50 CPC at a 2% CTR equals $0.50 × 0.02 × 1,000 = $10 CPM.

Effective CPM is the same formula applied to results you already have, often by publishers: earnings ÷ impressions × 1,000. It lets you compare CPC, CPA and flat-fee deals on one per-1,000 basis.

CPM Calculator

Enter any two of CPM, budget, or impressions to instantly calculate the missing value for your ad campaign.

CPM (cost per mille) is what you pay for every 1,000 ad impressions: CPM = cost ÷ impressions × 1,000.

Select What to Calculate

Choose the unknown variable, then fill in the two known values.

Total Budget ($)

Total Impressions

CPM Formulas

CPM = (Budget / Impressions) × 1,000

Budget = (CPM × Impressions) / 1,000

Impressions = (Budget / CPM) × 1,000

Fill in the fields on the left and click Calculate.

Copied!

Quick answer

CPM (cost per mille) is what you pay for every 1,000 ad impressions: CPM = cost ÷ impressions × 1,000. Spending $500 for 250,000 impressions gives a CPM of $2.00.

Examples

You know	Formula	Example
Cost and impressions	cost ÷ impressions × 1,000	$500 and 250,000 → $2.00 CPM
CPM and impressions	CPM × impressions ÷ 1,000	$8 CPM and 1,000,000 → $8,000
Cost and CPM	cost ÷ CPM × 1,000	$2,000 at $12.50 → 160,000 impressions

Enter any two values to solve for the third.

Summary

CPM (Cost Per Mille) measures how much an advertiser pays for 1,000 ad impressions. This calculator lets you solve for any one of the three core variables — CPM rate, total budget, or total impressions — given the other two. It is the standard metric used in display advertising, programmatic media buying, and social media campaigns.

How it works

Select which value you want to calculate: CPM, Budget, or Impressions.
Enter the two known values in the corresponding fields.
Click "Calculate" and the result appears instantly.
Use the reset button to start a new calculation.
Copy the result to your clipboard with one click.

Use cases

Estimate total ad spend needed to reach a target impression volume.
Back-calculate the CPM rate from a media plan budget and impression goal.
Compare CPM rates across different ad networks and placements.
Forecast impressions achievable within a fixed campaign budget.
Audit invoices by verifying that billed CPM aligns with delivered impressions.
Plan programmatic display campaigns with precise budget allocation.
Benchmark CPM efficiency across Facebook Ads, Google Display, and LinkedIn.
Quickly present media cost estimates to clients or stakeholders.

Frequently Asked Questions

Last updated: 2026-05-29 · Reviewed by Nham Vu