Viral coefficient, NPS, cohort retention, A/B testing, and conversion calculators. Browse our free growth tools below — all calculators are instant, accurate, and require no sign-up.
A/B Test Sample Size Calculator — Calculate the required sample size for statistically significant A/B tests. Input baseline rate, minimum detectable effect, significance, and power.
Activation Rate Calculator — Calculate your product activation rate by measuring the percentage of signups who complete a key action. Benchmark and optimize your onboarding funnel.
Cohort Retention Calculator — Calculate cohort retention rates across time periods. Visualize user retention curves, identify drop-off points, and benchmark retention by cohort size.
Conversion Funnel Calculator — Build and analyze a multi-step conversion funnel with up to 6 stages. Calculate step-by-step and overall conversion rates with visual funnel display.
DAU/MAU Ratio Calculator — Calculate your DAU/MAU stickiness ratio to measure user engagement. Benchmark against industry standards and model the impact on growth metrics.
Feature Adoption Rate Calculator — Calculate how many active users adopt specific features. Compare adoption rates across features to prioritize development and identify underused capabilities.
K-Factor Calculator — Calculate the K-factor (viral coefficient) for your product. Model compounding user growth across generations and optimize invitation and conversion rates.
NPS Score Analysis Calculator — Calculate Net Promoter Score from survey data. Analyze promoter, passive, and detractor distributions with benchmarks and improvement modeling.
Product-Market Fit Score Calculator — Calculate your product-market fit score using the Sean Ellis test. Measure what percentage of users would be "very disappointed" without your product.
Statistical Significance Calculator — Test whether your A/B test results are statistically significant using a two-proportion Z-test. See p-value, confidence interval, and effect size.
Time to Value Calculator — Calculate your product's median time to value (TTV) from signup to first value moment. Analyze onboarding efficiency and set TTV reduction targets.
Viral Coefficient Calculator — Calculate the viral coefficient (K-factor) of your product. Model referral-driven growth, project user curves, and determine if K > 1 for true virality.