Clever Marketing Tools
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Ad metrics calculator

ROAS, CPM, CPC, CPA and conversion rate — solve for any variable. Runs in your browser — nothing is stored or sent anywhere.

How the ad metrics calculator works

Pick a metric, enter your numbers, and the calculator returns the result with all related values. Everything runs in your browser — nothing is stored or sent anywhere.

ROAS = revenue ÷ ad spend

ROAS (return on ad spend)

ROAS compares the revenue your ads generated with what they cost. A 4.19× ROAS means $4.19 back for every $1 spent. It ignores margin entirely — a healthy-looking ROAS can hide losing campaigns if your margins are thin.

CPM (cost per mille)

CPM is the cost per 1,000 impressions. It measures how much you pay for visibility, regardless of whether anyone clicks or converts. Useful for comparing display, video and social placements on a common scale.

CPC and CPA

CPC (cost per click) tells you what each visit costs. CPA (cost per acquisition) tells you what each conversion costs. Together they reveal the efficiency of your funnel: a low CPC with a high CPA means traffic is cheap but not converting.

NOTE
Break-even ROAS = 1 / gross margin. At 25% margin, anything under 4.0× is losing money.

Conversion rate

Conversion rate divides conversions by clicks (or visitors). It is the most important single number for landing page optimization — small changes in CR compound into large budget savings at scale.

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