ProfitMetricLabHow it works
Cash ÷ (monthly outflow − monthly inflow)
$60,000 cash with $5,000 monthly net burn lasts 12 months.
What the result means
This excludes financing, seasonality and one-time costs. When inflow meets or exceeds outflow there is no finite runway under this model; the tool reports that condition rather than a misleading number.
Assumptions & limits
Mathematical estimate using the values entered. Costs or conditions not included in your inputs are excluded. Method reviewed October 18, 2026.
Common questions
Are my inputs saved?
We do not store or submit form inputs. Reloading restores the example values.
Is the result exact?
The display rounds to at most two decimal places; intermediate values retain their precision. Assumptions may differ from your actual situation.