Free SaaS Tools
SaaS metric calculators
Quick, free calculators for the metrics that decide whether a subscription business compounds or leaks — each with the formula and benchmarks. No signup.
Churn Rate Calculator
Customer (logo) churn and gross revenue (MRR) churn, with healthy-range benchmarks.
NRR Calculator
Net revenue retention (and GRR) from expansion, contraction and churn. 100%+ is good.
LTV Calculator
Margin-adjusted customer lifetime value, the LTV:CAC ratio and CAC payback period.
SaaS Quick Ratio Calculator
Growth efficiency: MRR gained vs. MRR lost. A ratio of 4+ is excellent.
Churn ROI Calculator
Annual revenue recovered by reducing churn, net of plan cost — with payback and ROI.
MRR Calculator
Monthly recurring revenue by plan tier, blended ARPA and annualized ARR — multi-tier support.
ARR Calculator
Convert MRR to ARR and project 12-month trajectory from your expansion and churn rates.
Retention Rate Calculator
Customer retention rate, customer churn rate and gross revenue retention (GRR) — two sections.
Want these tracked automatically? Connect Stripe to RetentionLens and every metric updates itself — with cohorts, trends and predictive churn scoring.