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Advertising Tool

Facebook Ad Budget Calculator

Estimate total and daily Meta/Facebook ad budget from a target number of conversions and expected CPA.

Free to use. No account required. Calculator inputs are processed in your browser.

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Change the inputs to recalculate instantly.

Estimated total budget

$600

Estimated daily budget

$30

Planning estimate only; actual platform delivery and CPA can vary.

How the calculation works

Total budget = Target conversions × Expected CPA; Daily budget = Total budget ÷ Days

Worked example

For 50 target conversions at a $12 expected CPA over 20 days, estimated total budget is $600 and daily budget is $30.

Frequently asked questions

Does this guarantee the number of conversions?

No. It is a planning estimate. Actual CPA and conversion volume can change with auction conditions, creative, offer, audience, tracking, and landing-page performance.

What CPA should I enter?

Use a recent realistic CPA from comparable campaigns, or use your maximum economically acceptable CPA if you are planning a new test.

Should I start with the full calculated daily budget?

Not always. New campaigns often benefit from controlled testing and measurement before larger budget increases.

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