By CalculatorInn Team · Updated: 2026-03-22 · Free & accurate · Instant results
Calculate essential SaaS business metrics including MRR, ARR, customer lifetime value, churn rate, and the LTV:CAC ratio.
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MRR = Customers × ARPU; LTV = ARPU / Monthly Churn; LTV:CAC = LTV / CAC
MRR is total monthly recurring revenue. LTV estimates total revenue from a customer before they churn. LTV:CAC should be > 3x for a healthy business.
3:1 or higher is considered healthy. Below 1:1 means you're losing money on every customer. Above 5:1 suggests you could invest more in growth.
For B2B SaaS, 3-5% monthly is average. Best-in-class companies achieve under 2% monthly churn.
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