Startup Runway Calculator
Updated on 22 Oct 2026 · Checked by Aotob
Your cash lasts 12.6 months.
You spend $60,000 a month against $15,000 of revenue growing 5% a month.
Runway
12.6months
Start raising or cutting with at least 6 months of runway left; fundraising often takes 3 to 6 months.
Show the working
Each month: cash − (60,000 − revenue); revenue × (1 + 5%)
Cash and monthly revenue
Runway by monthly spend
| Monthly spend | Runway |
|---|---|
| 42,000 | No end |
| 48,000 | No end |
| 54,000 | 15.6 months |
| 60,000 | 12.6 months |
| 66,000 | 10.7 months |
Questions people ask
What is burn rate?
Gross burn is what you spend each month. Net burn is spending minus revenue: the amount your cash actually falls.
How much runway should a startup have?
Investors often expect 18 to 24 months after a raise. Start the next raise with 6 to 9 months left.
Why include revenue growth?
Growing revenue lowers net burn every month, so runway is longer than cash ÷ today’s burn.
Updated 22 Oct 2026Source: Standard business accounting formulasChecked by AotobAssumes spending stays flat and revenue grows steadily.Report an issue