Free toolsBurn and runway
Cash burn and runway calculator
Gross burn, net burn, and the month the cash runs out — with the date named rather than left as a number of months to count on your fingers.
Runway
7.2 months
Cash reaches zero in September 2026 on this plan. Most advice is to start raising when six months remain, not when the runway ends.
- Gross burn
- $76,000
- Everything going out, before any revenue.
- Net burn
- $58,000
- Gross burn less revenue. This is what runway is computed on.
- Lowest cash on this plan
- -$277,967
- In month 19.
- Additional funding needed
- $277,967
- The deepest the account goes below zero — the minimum a raise has to cover before anything else.
Cash across five years
How this is computed
Pre-revenue and early-revenue companies, and anyone about to be asked how long their runway is by someone who will check.
- Gross burn is everything going out. Net burn is that less what comes in, which is the figure runway is computed on.
- Runway is closing cash over net burn, recomputed each month as revenue grows rather than held flat.
- The model is run through the engine, so the cash-out month accounts for the revenue ramp rather than assuming today's burn forever.
What it will not tell you
A calculator that lists only what it does is a toy. These are the limits worth knowing before you quote the answer to anyone.
- Runway assumes the plan holds. The point of a downside scenario is to find out what happens when it does not.
- Raising takes months. Most advice is to start when six months remain, not when the runway ends.
This number belongs in a document that agrees with it.
The full plan links every one of these together and blocks export until the prose and the model reconcile. Free to generate and read.