CPM means cost per mille — the price an advertiser pays per 1,000 ad impressions. It is standard for display, programmatic, YouTube, and podcast ads.

How do I calculate CPM?

Use CPM = (total cost ÷ total impressions) × 1,000. Example: $500 for 100,000 impressions → ($500 ÷ 100,000) × 1,000 = $5.

What is the CPM formula?

CPM = (cost ÷ impressions) × 1,000. Rearranged: cost = (CPM × impressions) ÷ 1,000, and impressions = (cost ÷ CPM) × 1,000.

eCPM is effective CPM — your actual cost (or revenue) per 1,000 impressions after the campaign runs. Enter spend and impressions to reverse-calculate it here.

Is CPM the same as CPC?

No. CPM prices impressions; CPC prices clicks. This page focuses on CPM math. Related shopping and percent tools live in the Discount Calculator and Percentage Calculator.

Calculator Tools

Popular

CPM Calculator

Enter any two of cost, impressions, and CPM to solve for the third.

Impressions

CPM ($)

Total cost / revenue

$5,000

About CPM Calculator

CPM (cost per mille) is the price of 1,000 ad impressions. Enter any two of cost, impressions, and CPM to solve for the third — for budgets, publisher revenue, or campaign planning. Runs locally in your browser.

How to Use CPM Calculator

Enter impressions and CPM to get total cost or revenue.
Or enter spend and impressions to calculate effective CPM (eCPM).
Or enter budget and CPM to see how many impressions you can buy.
Use the results for ad budgeting and campaign planning.

CPM Calculator Formula

CPM = (cost ÷ impressions) × 1,000. Cost = (CPM × impressions) ÷ 1,000. Impressions = (cost ÷ CPM) × 1,000. Example: $500 spend on 100,000 impressions → ($500 ÷ 100,000) × 1,000 = $5 CPM.

CPM Calculator Examples

$500 on 100,000 impressions

CPM = ($500 ÷ 100,000) × 1,000 = $5.

1M impressions at $5 CPM

Total cost = 1,000,000 ÷ 1,000 × $5 = $5,000.

$2,000 budget at $4 CPM

Impressions = ($2,000 ÷ $4) × 1,000 = 500,000.

Common Use Cases

Estimate display or programmatic campaign cost
Back into eCPM from spend and delivered impressions
Plan how many impressions a fixed budget can buy
Rough YouTube or podcast ad revenue checks

Read the full guide

How to Use CPM Calculator: Complete Guide (2026) - 5 min read

Frequently Asked Questions about CPM Calculator

What is CPM?: CPM means cost per mille — the price an advertiser pays per 1,000 ad impressions. It is standard for display, programmatic, YouTube, and podcast ads.
How do I calculate CPM?: Use CPM = (total cost ÷ total impressions) × 1,000. Example: $500 for 100,000 impressions → ($500 ÷ 100,000) × 1,000 = $5.
What is the CPM formula?: CPM = (cost ÷ impressions) × 1,000. Rearranged: cost = (CPM × impressions) ÷ 1,000, and impressions = (cost ÷ CPM) × 1,000.
What is eCPM?: eCPM is effective CPM — your actual cost (or revenue) per 1,000 impressions after the campaign runs. Enter spend and impressions to reverse-calculate it here.
Is CPM the same as CPC?: No. CPM prices impressions; CPC prices clicks. This page focuses on CPM math. Related shopping and percent tools live in the Discount Calculator and Percentage Calculator.

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