A/B Test Significance Calculator

Did version B really beat version A? Enter visitors and conversions to get the lift, the p-value and a plain-English verdict.

FreeNo sign-upRuns in your browser

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How to use it

  1. Add your inputType or paste your input. Many tools already show an example you can change.
  2. Press Run toolThe result appears right below the button.
  3. Copy or downloadUse Copy output, or the Download button for files.

This tool works inside your browser: what you enter stays on your device.

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