Burn Rate Calculator
Compute monthly burn and runway from starting balance, ending balance, and months elapsed. Know exactly how many months remain — free, local, no signup.
How to Use the Burn Rate Calculator
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Frequently Asked Questions
Gross vs net burn?
Gross is total monthly outlay; net subtracts revenue. This tool derives burn from (starting − ending) ÷ months — e.g. $100k to $70k over 3 months burns $10k/mo. The months slider runs 1–24 with 4 presets (Pre-Seed, Seed, Series A, Bootstrapped) and a 10-entry history.
How much runway is safe?
18+ months post-raise is comfortable; under 6 demands immediate action (raise, cut, or revenue sprint). The default startup killer is slow response.
Extending runway?
Cut burn (hiring freeze first), accelerate revenue, or bridge finance — in that speed order. Model all three scenarios.
Do burn figures upload?
No — math runs locally in your browser. Figures never leave your device.
Last updated October 2026