Compute monthly burn and runway from starting balance, ending balance, and months elapsed. Know exactly how many months remain — free, local, no signup.
Compute startup runway from cash balance and monthly burn — months until decisions. Act at 12 months, not 3 — free, local, no signup.
Compute CAC payback months — how fast customers repay acquisition cost. Prove 12-month payback to investors — free, local, no signup.
Compute conversion rate from visitors and conversions with presets, history, and CSV export. Turn 2% into 3% deliberately — free, local, no signup.
Plan a single-debt payoff from balance, rate, and monthly payment. See months to debt-free with a payoff timeline — free, local, no signup.
Compute gross margin from revenue and costs — know exact profitability. A $30 sale at $20 cost margins 33% — free, local, no signup.
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.
18+ months post-raise is comfortable; under 6 demands immediate action (raise, cut, or revenue sprint). The default startup killer is slow response.
Cut burn (hiring freeze first), accelerate revenue, or bridge finance — in that speed order. Model all three scenarios.
No — math runs locally in your browser. Figures never leave your device.
Last updated October 2026