CRO calculators for better experiment planning
Free planning tools for sample size, test duration, funnel math, and the practical decisions behind conversion experiments.
Available
Landing Page Friction Audit
Score hero clarity, offer, proof, CTAs, forms, mobile, and trust signals, then get the highest-impact fixes to test first.
Available
A/B Test Sample Size Calculator
Estimate visitors per variant, total sample size, test duration, and whether your planned experiment is likely to be practical.
Available
A/B Test Significance Calculator
Compare control and variant visitors/conversions to estimate lift and whether the result is strong enough to trust.
Available
Funnel Drop-Off Calculator
Find the biggest conversion leak across a funnel and estimate the upside of fixing each step.