SaaS MRR & Churn Calculator
Turn customers, price and churn into MRR, ARR, customer lifetime and a 12-month outlook.
MRR = customers × ARPU. Customer lifetime = 1 ÷ monthly churn. Each month customers = customers × (1 − churn) + new customers; the 12-month figure applies that 12 times.
Results are estimates for planning and learning. Check important numbers against your own data and a qualified professional. Everything is calculated in your browser; nothing you enter is sent anywhere.