🔧 OnlineToolKit

Startup Runway Calculator

Calculate how many months your startup can survive on current cash and burn rate. Free runway calculator with revenue offset.

Frequently asked questions

How is runway calculated?
Cash divided by net monthly burn (expenses minus revenue). With growth enabled, the model simulates month by month until cash hits zero.
How much runway should a startup have?
Conventional wisdom is 12-18 months after each raise, so you always have time to fundraise without desperation.
What burn rate should I enter?
All monthly operating costs: salaries, rent, tools, marketing. Subtract recurring revenue to get net burn.
Does the growth rate apply to expenses too?
No, this simple model holds expenses flat and grows only revenue, which is the optimistic case.

This tool runs entirely in your browser. No data is uploaded anywhere.