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ROAS calculator

Calculate conversion value divided by advertising spend.

Limited scopeCheck before reuseGeneral formula · User-supplied assumptions
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.

Arithmetic estimate only. Rates, returns, attribution and business inputs are not predictions or advice.

Enter values, then process to see the result.

How to use it

  1. Set the assumptions requested by the roas calculator.
  2. Calculate conversion value divided by advertising spend.
  3. Compare the result with the displayed formula and any real business costs before acting.

Important limitation

A scenario based on entered assumptions; it does not predict returns, rates, attribution or business performance.

The interactive form is fully localized in English.

Reviewed 2026-09-16; next review 2027-03-16.

The conversion-value divided by ad-spend formula has been reviewed. Attribution, incrementality, profit and data quality are excluded.

Sources

Google Ads glossary — ROASGoogle Ads Help · opens in a new tabSupports the stated arithmetic only; rates, returns and business inputs are not verified.Source checked 2026-09-16
Recorded updates

Review history

Site changelog

Dates describe the review scope recorded below. A page update does not mean every source was checked again.

  1. Last recorded source/method review

    The conversion-value divided by ad-spend formula has been reviewed. Attribution, incrementality, profit and data quality are excluded.

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