Runway Calculator
Runway is the number of months your business can keep operating before it runs out of cash. Enter your numbers below to see how much time you have — and when you'd need to act.
Enter your numbers to see your runway
How runway is calculated
Runway is your cash on hand divided by your net monthly burn. Net burn is your monthly expenses minus your monthly revenue. If you spend $50,000 a month and earn $20,000, your net burn is $30,000 — so $180,000 in the bank gives you six months of runway.
If your revenue exceeds your expenses, you are profitable and your runway is effectively unlimited at the current rate.
Why founders track runway in months
Thinking in months instead of dollars turns an abstract bank balance into a clear deadline. A good rule of thumb: never let runway fall below six months without a plan, and start a fundraise when you have at least six months left, because raising money almost always takes longer than expected.
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