Runway Calculator
Enter your cash on hand and monthly net burn to see your runway in months and your estimated zero-cash date — the single number every founder should watch.
Your numbers
Leave at 0 if pre-revenue.
11.1 months
Healthy buffer.
June 2027
At your current net burn.
What this means
Runway is how long your company can keep operating before it runs out of cash, assuming spending stays roughly the same. It’s simply your cash on hand divided by your monthly net burn (money out minus money in). When runway gets short — typically under 6 months — it’s time to either cut costs or raise more capital. Investors look at runway to gauge how much pressure you’re under and how long a round needs to last.
Founder guidance
Runway
How many months your cash lasts at your current burn.
Burn rate
How much cash you spend per month, on average.
Net cash flow
Money in minus money out over a period.
Frequently asked
What is a good amount of runway?
Most founders aim to keep at least 12–18 months of runway, and to start raising when they have 6–9 months left, since fundraising itself can take months.
What’s the difference between gross and net burn?
Gross burn is everything you spend each month. Net burn subtracts any revenue you bring in. Runway is based on net burn — what you actually deplete from the bank.
Does this account for revenue growth?
This is a simple, point-in-time estimate at your current net burn. As revenue grows, your real runway extends — model best/worst cases by adjusting the burn input.
Track this for real in YieldShift
These numbers come to life when your books, cap table, and runway live in one place — free while we’re in beta.