Startup Runway Calculator

Startup runway is the number of months a company can operate before running out of cash at its current burn rate. It is the most important survival metric for early-stage companies

The calculator uses the standard published formula for startup runway calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Runway = Cash balance / Monthly burn rate. Each step in the calculation is shown so you can verify the result manually.