Free tool
Startup runway calculator. Are you default alive?
Enter your cash, revenue, and expenses. Get your runway with a real month-by-month model that counts your growth. Free, no signup.
Runway
8 months
Cash runs out around March 2027.
Net burn / mo
$60,000
Gross burn / mo
$80,000
Net burn is expenses minus revenue. Runway is simulated month by month, so revenue growth is counted, not ignored.
Runway is a number. The reason behind it is every call you made to get here. Almanack keeps those, sourced, so you can ask why later, not just how much is left.
Built for foundersAn estimate from flat monthly expenses and compounding revenue. Not financial advice.
Why founders trust the number
Month-by-month, not a guess
It simulates each month and compounds your revenue growth, so a growing startup's runway is right, not understated by a flat division.
Net and gross burn
See both: gross burn is total spend, net burn is spend minus revenue. Runway depends on net burn.
Default alive or dead
The one status that matters, in Paul Graham's words: do you reach breakeven before the cash runs out?
A real zero-cash date
Not just a month count, an actual date, so the deadline is concrete.
Any currency
Pick your symbol. The math is the same wherever you bank.
Private
Nothing you type is uploaded or stored. It runs entirely in your browser.
FAQ
Runway, answered
How do you calculate runway?
Runway is how many months your cash lasts. This tool simulates each month: it adds revenue minus expenses to your cash and grows revenue by your rate, until cash hits zero or revenue covers expenses.
What is the difference between net burn and gross burn?
Gross burn is your total monthly spend. Net burn is spend minus revenue, the amount you actually lose each month. Runway is based on net burn.
What does default alive mean?
Default alive, a term from Paul Graham, means your revenue growth reaches breakeven before your cash runs out, so you survive without raising again. Default dead is the opposite.
Is this burn rate calculator free?
Yes. It runs in your browser with no signup, and nothing you enter is stored.
Your runway is a number. Your decisions are the reason.
Almanack keeps every call you make, sourced, so you can ask why later, not just how much is left.
$96 a year or $14 a month. Cancel anytime.