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Ad Metrics Calculator (CPM, CPC, CTR, ROAS)

Calculate CPM, CPC, CTR, conversion rate, CPA and ROAS from your ad spend and results.

Result

Enter your values and select Calculate to see the result.

Runs in your browser — nothing you enter is sent to a server.

How the Ad Metrics Calculator (CPM, CPC, CTR, ROAS) works

Enter what you know from your ad platform — spend, impressions, clicks, conversions and revenue — and the calculator works out every metric those numbers allow. Leave a field empty if you don't have it; for example, spend and clicks alone give the cost per click.

Formulas

Cost metrics

CPM = spend ÷ impressions × 1,000 · CPC = spend ÷ clicks · CPA = spend ÷ conversions

Rates

CTR = clicks ÷ impressions · conversion rate = conversions ÷ clicks

Return

ROAS = revenue ÷ spend

Examples

A search campaign

500 spent for 100,000 impressions, 2,000 clicks, 50 sales and 2,000 in revenue: CPM 5.00, CPC 0.25, CTR 2%, conversion rate 2.5%, CPA 10.00 and ROAS 4×.

Only spend and clicks

300 spent for 1,200 clicks is a CPC of 0.25.

Frequently asked questions

What is a good ROAS?

It depends on your margins: with a 25% margin, you need a ROAS above 4× just to break even on the ad spend. Compare ROAS with your own break-even point, not a general benchmark.

ROAS or ROI?

ROAS uses revenue; ROI uses profit. A campaign can have a high ROAS and still lose money if margins are thin.

Is my data uploaded?

No. Everything is calculated in your browser.

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