Skip to content
🧬

A/B Test Calculator

Check A/B test significance with a two-proportion z-test, uplift, and p-value.

A rate

—

B rate

—

Uplift

—

p-value

—

More in Marketing Calculators

View all →
ROAS Calculator Return on Ad Spend CAC Calculator Customer Acquisition Cost Engagement Rate Calculator Social media engagement rate Markup & Margin Calculator Price markup vs profit margin LTV:CAC Ratio Calculator Unit economics health check CPA Calculator Cost Per Acquisition

What Is A/B Test Calculator?

The A/B Test Calculator runs a two-proportion z-test on your split test: visitors and conversions per variant in, conversion rates, uplift, z-score, and p-value out. Results under 30 visitors per side are held back, and a 95% confidence verdict says whether to ship B or keep testing.

Who Uses the A/B Test Calculator?

Growth teams, CRO specialists, and product managers use it to call tests without misreading noise as a win.

How to Use the A/B Test Calculator

  1. Enter visitors and conversions for variant A.
  2. Enter visitors and conversions for variant B.
  3. Read rates, uplift, p-value, and the verdict.

Why Choose Our A/B Test Calculator?

  • Proper two-proportion z-test, not a guess
  • Uplift and p-value side by side
  • Small samples flagged instead of misjudged

Try the A/B Test Calculator above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.