Two numbers in, one number out, and a verdict calibrated to the four-month line.
Runway = cash ÷ burn. Use your highest recent burn month, not your cheapest. Why four months is the line: the runway guide.
This calculator runs entirely in your browser with the numbers you type; nothing is sent anywhere. The app computes the same answer from your actual deposits, which is both lazier and more honest than typing.
Connect Square, Stripe, Shopify, Etsy, QuickBooks, or your bank. Every answer carries a receipt: the method, the sample size, and the confidence. When the math is not conclusive, it says so.
Counsel's rule, applied to its own content: every figure above is computed, sourced from our demo businesses or your own inputs, never invented. This is cash math, not tax or legal advice. Written and maintained by the founder.