Burn Rate & Runway Calculator
Net burn, months of runway and the date cash runs out — the survival metric every founder checks before raising.
Formula
Raise when you have 12-18 months of runway, not when you're desperate — fundraising takes 3-6 months and weakness shows in the terms. Growth extends runway only if you're approaching breakeven; if costs grow with revenue, the growth line barely helps.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Disclaimer: This tool is for general informational and estimation purposes only and is not professional financial, tax, accounting or legal advice. All figures are estimates — verify with a qualified professional before making decisions. Read the full disclaimer.
Need burn rate & runway calculator results fast? Analysts, founders, traders and finance professionals use the Burn Rate & Runway Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Burn Rate & Runway Calculator
Net burn, months of runway and the date cash runs out — the survival metric every founder checks before raising. Raise when you have 12-18 months of runway, not when you're desperate — fundraising takes 3-6 months and weakness shows in the terms. Growth extends runway only if you're approaching breakeven; if costs grow with revenue, the growth line barely helps. The governing relationship is net burn = costs − revenue; runway = cash / net burn (revenue growing). The Burn Rate & Runway Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Burn Rate & Runway Calculator
- 1Enter Cash in bank (currency), Monthly revenue (currency), Monthly cash costs (currency), Monthly revenue growth (%) into the Burn Rate & Runway Calculator.
- 2The result is computed automatically using net burn = costs − revenue; runway = cash / net burn (revenue growing) — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Burn Rate & Runway Calculator?
- ✓Computes burn rate & runway calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Burn Rate & Runway Calculator?+
Burn Rate & Runway Calculator uses net burn = costs − revenue; runway = cash / net burn (revenue growing). Raise when you have 12-18 months of runway, not when you're desperate — fundraising takes 3-6 months and weakness shows in the terms. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Burn Rate & Runway Calculator need?+
Enter Cash in bank (currency), Monthly revenue (currency), Monthly cash costs (currency), Monthly revenue growth (%) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Burn Rate & Runway Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Burn Rate & Runway Calculator?+
Growth extends runway only if you're approaching breakeven; if costs grow with revenue, the growth line barely helps.
What is the Burn Rate & Runway Calculator based on?+
The method follows authoritative sources: YC / startup finance — runway management. The formula and references are shown on the page so you can verify and cite the result.
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