Free SaaS calculators

Quick, free tools for the numbers that decide whether an early-stage SaaS survives. Each one also tells you what's healthy for your stage — then build the full model when you're ready.

SaaS Viability Score

One 0–100 number: does your early-stage SaaS hold up? Five pillars scored.

Runway & Burn Calculator

How long your cash lasts at the current pace, with break-even.

Dilution Calculator

Investor stake, post-money and founder dilution for your round.

LTV:CAC Calculator

Lifetime value, LTV:CAC ratio and CAC payback for your SaaS.

Rule of 40 Calculator

Your growth + margin score, and whether it passes.

Burn Rate & Runway Calculator

Months of runway from your cash and monthly net burn.

Churn Calculator

Turn monthly churn into annual churn and retention.

CAC Payback Calculator

Months to recover acquisition cost, and if it is healthy.

MRR Growth Calculator

Project MRR and check if the growth is defensible.