Free calculators & benchmarks
for startup founders
Model your runway, SaaS metrics, cap table, SAFE conversions and fundraise — instantly, in your browser. No signup, no spreadsheets, no fluff.
Explore the toolsCalculators
Six focused tools that do real math on your numbers.
Runway Calculator
How many months of cash you have left, plus net & gross burn and your zero-cash date.
SaaS Metrics Calculator
MRR, ARR, ARPU, LTV, CAC payback and LTV:CAC ratio with benchmark health checks.
Cap Table Calculator
Model an option pool plus Seed/Series A/B rounds and see founder dilution after each.
SAFE Note Calculator
See how a valuation cap & discount convert a SAFE/note into shares and ownership %.
Break-Even Calculator
Break-even units & revenue, contribution margin and margin of safety from your costs.
Fundraising Calculator
Estimate how much to raise from burn + target runway, and the implied valuation.
Guides & benchmarks
Know what “good” looks like before you run the numbers.
What is a good LTV:CAC ratio?
The widely cited healthy LTV:CAC ratio is 3:1. Learn what it means, why 3:1 is the target, what too-high and too-low signal, and calculate yours instantly.
What is a good SaaS churn rate?
Good monthly SaaS churn is roughly 1% or lower for established companies; SMB tools run higher than enterprise. See benchmarks by segment and calculate your impact.
What is a good CAC payback period?
A good CAC payback period for SaaS is under 12 months; under 18 is acceptable. Learn how to calculate it on a gross-margin basis and what drives it.
The Rule of 40, explained
The Rule of 40 says a healthy SaaS company's growth rate plus profit margin should exceed 40%. Learn how to calculate it, why it matters, and the trade-off it captures.
Net revenue retention (NRR) benchmarks
Good net revenue retention for SaaS is 100%+, with best-in-class above 120%. Learn how NRR is calculated, why it matters, and benchmarks by segment.
SaaS gross margin benchmarks
Healthy SaaS gross margins are typically 70–85%. Learn what counts in cost of goods sold for SaaS, why margin matters, and how it affects LTV and the Rule of 40.
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Try the SaaS Metrics Calculator