Burn Rate and Runway Calculator

Find how fast a business is spending cash and how many months until it runs out.

$
$
Gross burn: all cash going out each month.
$
Optional: grows revenue each month.
Fractions and decimals both work.
–
Months of Runway
Gross burn
Net burn
Runway at today’s burn
Cash runs out
Revenue needed to break even
Runway with Growth

Scenarios

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How to Calculate Burn Rate and Runway

Gross burn is all the cash you spend in a month. Net burn is gross burn minus the cash that comes in. Runway is how many months your cash lasts at the net burn.

Net burn = monthly expenses − monthly revenue   Runway = cash ÷ net burn
With growth, revenue rises each month and runway is found month by month

Worked Example

Tips

Use cash actually collected, not booked revenue. Plan to raise money or cut costs with at least 6 to 9 months of runway left.