A/B Test Calculator

Calculate statistical significance, confidence intervals, and uplift for your A/B tests.

Test Data

Load a preset:

CTA Button Color Pricing Page Email Subject Close Call

Control (A)

Visitors Conversions

Treatment (B)

Visitors Conversions

Significance level

Test type

Get the Full A/B Test Calculator

Multi-variant (MVT) testing, Bayesian analysis, sequential testing, sample size planner, and automated test stopping rules with Slack alerts.

This demo shows limited functionality. Buy the full tool for all features.