Startup Toolkit · calculator
Startup Runway & Burn Rate Calculator
See how long the cash balance you enter would support the current operating pattern—and when a finite runway is not meaningful.
UNDERSTAND THE RESULT
Your result will appear here.
Enter the assumptions you want to examine, then calculate. We will show the result, the arithmetic and its limits.
HOW WE CALCULATED THIS
The formula stays visible.
Each result uses only the values you enter. The calculator does not add hidden assumptions.
- Gross monthly burn
- Monthly operating expenses
- Net monthly burn
- Monthly operating expenses − monthly revenue
- Estimated runway
- Current cash balance ÷ positive net monthly burn
- Annualized operating spend
- Monthly operating expenses × 12
UNDERSTAND BEFORE YOU DECIDE
What the number can—and cannot—tell you.
Runway is a snapshot
The result holds revenue and expenses at the values entered. Hiring, collections, one-off costs and timing differences can change actual cash movement.
No positive burn means no finite result
When revenue is equal to or greater than expenses, this formula does not produce a finite runway. That is a mathematical condition, not a forecast of permanent sustainability.
This educational estimate is based on the assumptions you enter and is not financial, accounting or investment advice.