Growth calculators
Every tool is free. No signup, no paywall. Built on real statistics — not approximations. Used by 5,000+ eCommerce and SaaS growth teams.
Bayesian A/B Test Calculator
Probability-to-beat-control, expected loss, and 95% credible intervals. The right way to read A/B test results.
Use tool →Sample Size Calculator
Exact visitor count per variant needed for your test to be statistically valid. Calculate before you start.
Use tool →MDE Calculator
The smallest uplift your test can reliably detect given your traffic volume and test duration.
Use tool →CRO ROI Calculator
What's a 10%, 20%, or 30% CVR improvement worth annually? See the revenue impact before committing.
Use tool →Test Duration Calculator
How long to run your test before you can trust the result. Get the exact number of days — not an estimate.
Use tool →Conversion Rate Calculator
Calculate your CVR instantly — enter visitors and conversions, get your rate plus industry benchmarks.
Use tool →Average Order Value Calculator
Calculate your AOV from total revenue and number of orders. See how small AOV gains compound over time.
Use tool →Cart Abandonment Rate Calculator
Measure your cart abandonment rate and see how much revenue you're leaving in abandoned carts.
Use tool →Customer Acquisition Cost Calculator
Calculate your true CAC from marketing spend and new customers acquired. Compare against LTV.
Use tool →Customer Lifetime Value Calculator
Calculate LTV from AOV, purchase frequency, and customer lifespan. The metric that unlocks profitable growth.
Use tool →Revenue Per Visitor Calculator
Calculate RPV — the single metric that combines CVR and AOV into one number. The CRO north star.
Use tool →Statistical Significance Calculator
Test if your A/B results are statistically significant using a z-test. Know when to call a winner.
Use tool →Need help interpreting your results?
Our team will review your test data, current funnel metrics, and tell you exactly what to prioritize next.