Free A/B Test Planner — Plan & Prioritise Your CRO Tests
Plan A/B tests properly before you run them. Calculate the sample size you need for statistical significance, estimate how long your test will take, and prioritise experiments by expected impact and effort.
What the Planner Calculates
- Required sample size per variation for 95% statistical confidence
- Estimated test duration based on your current traffic volume
- Minimum detectable effect at your traffic level
- Priority score based on impact, confidence, and ease of implementation
Not sure what to test first? Run a free AI audit to identify your highest-impact conversion opportunities — then use this planner to size and prioritise those experiments.
Read the statistics behind running valid tests in our A/B testing statistics guide — covering sample size, significance, and when to stop. Read our in-depth comparison of AI analysis vs A/B testing to understand when each approach is the right choice. For SaaS teams, see our guide on SaaS trial-to-paid conversion. Upgrade to Pro for unlimited AI audits that tell you exactly what to test. Explore all free CRO tools.