Cash & runway
These free tools answer the question that kills most startups: are you about to run out of cash? Check your runway, burn rate and zero-cash date, and see whether the plan survives — before it bites, not after.
Runway & Burn Calculator
How long until I run out of cash? Your zero-cash date and break-even month.
Burn Rate Calculator
The simplest runway: your cash divided by monthly burn.
Burn Multiple Calculator
★ our dataHow much cash you burn per $1 of new ARR — capital efficiency, stage-aware.
When Can I Pay Myself?
★ our dataWhen can my startup afford to pay me a salary — from its own profit?
FAQ
How do I know if I am about to run out of cash?
Project your cash forward: divide your cash in the bank by your monthly net burn to get your runway in months, then find your zero-cash date. If that date comes before you reach break-even, you are burning toward a wall — the runway calculator shows both.
What is the difference between burn rate and runway?
Burn rate is how much cash you lose per month (gross = total spend; net = spend minus gross profit). Runway is how many months that burn buys you: cash divided by net burn. Burn is the speed; runway is the distance.
How much runway should an early-stage startup have?
A common rule is 18–24 months after a raise, and not letting it fall below about 6 months without a plan — a round takes roughly six months to close. Fewer than 6 months of runway is a red flag.
Ready for the full picture?
Each tool checks ONE number. The Viability Model runs them into one default-alive verdict, with benchmarks, scenarios, a cap table and a PDF.