Tools Startup Runway Calculator
Startup Runway Calculator
Runway is the number every founder should know cold: how long your cash lasts at the current burn. Enter your bank balance and net monthly burn to see your runway in months and the date you hit zero.
Runway
6.3 mo
Getting tight — start planning your raise or cuts.
Out of cash
—
Runway = cash ÷ net monthly burn. This is a point-in-time estimate at today's burn — a full model shows how runway shifts as revenue grows and spending changes.
Formula: Runway (months) = Cash on hand ÷ Net monthly burn
Want the full picture?
A single number is a snapshot. Build a complete 3-statement model to see how runway and profit change as you grow — described in a sentence, assembled by AI, editable line by line.
Frequently asked
How do you calculate startup runway?
Divide your current cash balance by your net monthly burn (cash out minus cash in). The result is the number of months until you run out of money at the current rate.
How much runway should a startup have?
Most investors want to see 12–18 months of runway after a raise. Below 6 months, you should already be raising or cutting burn.