Burn Rate & Runway Calculator

What this does

A burn rate and runway calculator finds your monthly net burn from expenses and revenue and how many months of runway your cash on hand provides.

How to use it

1. Enter your monthly expenses.
2. Enter your monthly revenue.
3. Enter cash on hand.
4. Read the runway in months.

How it works

If revenue exceeds expenses, net burn is zero or negative — you are cash-flow positive and runway is effectively unlimited.

net burn = expenses − revenue; runway = cash ÷ net burn

Understanding your result

Runway is how many months your cash lasts at the current net burn, the hard deadline by which you need to reach profitability or raise more. Falling revenue or rising costs shorten it fast, so revisit it often. If revenue covers expenses, burn is zero and runway is effectively unlimited.

Example

$50k cash burning $10k a month gives 5 months of runway.