Cash runway estimator

Cash runway estimator: calculate a transparent estimate from the values and assumptions you provide.

Cash runway estimator: calculate a transparent estimate from the values and assumptions you provide.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated

Calculate

Formula: runway (months) = cash / (outflow − inflow)

Cash runway estimator: calculate a transparent estimate from the values and assumptions you provide.

cashBalance
Available cash
monthlyOutflow
Monthly cash outflow
monthlyInflow
Monthly cash inflow

Simplified projection assuming constant monthly flows; not financial advice.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const runwayMonths = 60000 / 7500; // 8 months