Free SaaS calculators
Quick, free, no-signup tools for the numbers that decide whether an early-stage SaaS survives. Start with the three below — the ones that save to My results — or step into the room for the number you want to check.
Start here
SaaS Viability Score
Does my whole business hold up? One 0–100 score across five pillars.
Runway & Burn Calculator
How long until I run out of cash? Your zero-cash date and break-even month.
Quit Number Calculator
How many sales a month to replace your income and go full-time — for one-time-priced apps.
By what you want to know
Cash & runway
Are you about to run out of money?
4 tools →
Unit economics
Do you make money on each customer?
5 tools →
Growth
Is your growth real — or a fantasy?
3 tools →
Fundraising & dilution
How much do you give up when you raise?
2 tools →
Ready for the full picture?
Each tool checks ONE number. The Viability Model runs them together: benchmarks for every metric, a plain default-alive verdict, scenarios, a cap table and a shareable PDF.