Runway is the number that ends startups. Enter cash in the bank, monthly expenses and monthly revenue to get net burn and how many months you have.
Runs entirely in your browser — nothing you enter is uploaded or stored.
Burn rate is how fast a startup spends cash; runway is how long that cash lasts. Net burn = monthly expenses − monthly revenue, and runway = cash ÷ net burn. This calculator returns net burn, runway in months and the approximate date you run out — the single number that ends most startups.