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FinToolSuite

SaaS & Subscription Calculators

Run the unit economics, growth, and retention metrics every subscription business reports.

4 free calculators in this category

About SaaS & Subscription Calculators

Calculators for ARR, MRR, ARPU, CAC, LTV, NRR / GRR, churn rate, magic number, rule of 40, viral coefficient, freemium conversion, payback period, customer cohort analysis, customer lifetime value, expansion and retention metrics, subscription revenue forecasts. The vocabulary of board decks and investor updates — translated to the maths you need to compute the numbers from your own data.

Frequently Asked Questions

What's the difference between ARR and run-rate revenue?
ARR (annual recurring revenue) is contracted recurring revenue annualised — typically MRR × 12. Run-rate revenue includes one-off and non-recurring revenue too. Use ARR for SaaS health metrics; run-rate for total business sizing.
How is NRR different from gross retention?
GRR (gross retention) measures revenue kept from existing customers without expansion (so it can never exceed 100%). NRR adds expansion / upsell, so a healthy SaaS can show NRR above 100% — meaning the existing customer base alone grows revenue even before new sales.

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