Free SaaS Tools
Free calculators for founders and buyers — no signup required.
SaaS Valuation Calculator
Estimate what your micro SaaS or side project could sell for, based on MRR, growth, churn, margin, and age.
MRR ↔ ARR Calculator
Convert monthly recurring revenue to annual (or back), and build up your MRR from multiple pricing plans.
Churn Rate Calculator
Calculate customer and revenue churn, plus a properly compounded annualized rate — not just monthly × 12.
SDE Calculator
Calculate Seller's Discretionary Earnings and see a rough valuation range based on profit, not just revenue.