wzlxp.top builder tools Startup runway calculator
Model cash runway from cash balance, revenue, revenue growth, fixed expenses, variable expenses, hiring costs, and one-time planned spend. Use it to pressure-test hiring, fundraising timing, and burn reduction decisions before the runway gets tight.
This calculator keeps everything local in your browser. It does not store cash, revenue, payroll, or fundraising assumptions.
Estimated planning result only. This monthly simulation caps at 60 months, applies one-time planned costs in month one, and compounds revenue growth monthly.
It is not accounting, tax, investment, legal, or fundraising advice. Verify decisions against your books and a qualified finance professional.
How to use
Start with your available cash, current monthly revenue, and a conservative monthly revenue growth rate.
Separate fixed expenses, variable expenses, hiring or contractor spend, and any one-time planned cost that will hit soon.
Use the target runway field to see the monthly burn reduction or revenue improvement needed to reach that goal.
Runway planning guide
Simple cash divided by burn can be useful, but founders often need a clearer view when revenue is changing, hiring is planned, or a one-time cost is about to land.
The calculator starts with cash balance, then subtracts each month of expenses and adds monthly revenue.
Monthly revenue is compounded by the growth rate you enter, so a conservative growth assumption can be compared with a flat scenario.
If cash would be negative at your target runway month, the tool estimates the monthly improvement needed through burn reduction or extra revenue.
A small team with real revenue and modest hiring plans, where a few thousand dollars of monthly burn change can extend runway meaningfully.
A venture-backed team with a larger cash balance, higher payroll, and a target runway long enough to reach the next fundraise.
A profitable or near-profitable product business that wants to test contractor spend, launch costs, and slower revenue months.
References and assumptions
This calculator uses a transparent monthly simulation capped at 60 months. One-time planned costs are applied in month one, revenue growth compounds monthly, and the estimate stops when ending cash reaches zero.
The page uses only numeric inputs in the browser. It does not upload financial data, connect to accounting software, store your assumptions, or make fundraising, tax, accounting, legal, or investment recommendations.
For operational decisions, compare at least three cases: conservative revenue, expected revenue, and slower hiring. Then verify the final scenario against your actual books.
FAQ
Startup runway is the estimated amount of time a company can keep operating before cash reaches zero, based on cash balance, revenue, expenses, growth, and planned costs.
Burn rate is the amount of cash the business uses over a period. Net burn usually means expenses minus revenue, while gross burn focuses on expenses before revenue.
Revenue growth can be included for planning scenarios, but it should be conservative. A runway estimate is safer when you also test a flat or slower-growth scenario.
If revenue is higher than expenses and cash is not declining in the simulation, the calculator shows that runway is not currently constrained by burn.
No. This is a planning estimate only. Important hiring, fundraising, tax, accounting, and investment decisions should be checked against your books and qualified advisors.