Canonical formula calculator
Runway
How many months of operating cash you have at your current burn rate.
Cash in the bank today.
How much you spend monthly. Include all costs.
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Optional — helps us match this calculation against relevant case studies (coming soon).
What this tells you
Runway is the simplest cash health number: how many months you can keep operating at your current burn rate before you run out. It is the metric every early-stage operator should know to the week.
When to use it
Check runway monthly. Recalculate any time burn changes — when you hire, when you sign a new lease, when you cut a contractor. A six-month runway is a different operating reality than a sixteen-month runway, and the actions that follow are different too.
What it doesn’t tell you
Runway assumes burn stays constant, which it usually doesn't. It also doesn't account for revenue coming in — if you have inbound cash, your effective runway is longer. Use this as the worst-case floor, not the operating ceiling.
Coming soon
Cases, plays, and benchmarks for this metric will appear here as the Moonshot knowledge libraries grow. For now: log in to track your number over time and Moonshot will surface trend warnings when the substrate fills in.