Startup Runway Calculator
Find out how many months of cash your startup has left. Enter your cash on hand, monthly burn and any revenue to see your net burn rate and runway.
How to use the startup runway calculator
- Enter your current cash on hand (your spendable bank balance).
- Enter your total monthly burn, then add monthly revenue if you have any.
- Read your net burn rate and how many months of runway remain.
Examples
Seed-stage startup
Cash $500,000, burn $50,000/mo, revenue $10,000/mo
Net burn $40,000/mo, runway 12.5 months
Cash-flow positive startup
Cash $200,000, burn $40,000/mo, revenue $60,000/mo
Net burn -$20,000/mo, profitable (runway effectively infinite)
Frequently asked questions
What does runway mean for a startup?
Runway is how many months your startup can keep operating before it runs out of cash, assuming spending and revenue stay roughly the same. It is your cash on hand divided by your net monthly burn.
How is runway calculated here?
Net burn equals monthly burn minus monthly revenue. Runway is cash on hand divided by net burn. If revenue is equal to or greater than burn, net burn is zero or negative, so you are cash-flow positive and runway is treated as infinite.
What is the difference between gross burn and net burn?
Gross burn is your total monthly spending. Net burn subtracts revenue from that spending. Runway is based on net burn, because incoming revenue offsets some of the cash you spend.
What happens when my revenue covers my burn?
When revenue meets or exceeds burn, net burn is zero or negative and you are not depleting cash. The calculator marks this as profitable, since at that rate your runway does not run out.
Is my financial data private?
Yes. The calculation runs entirely in your browser. Your cash, burn and revenue figures are never sent to a server or stored anywhere.
Should I plan to zero runway?
No. Burn and revenue change over time, and fundraising takes months. Many founders aim to start raising with six or more months of runway left as a safety buffer.
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