Startup Runway Calculator — how many months of cash you have left
حاسبة الـ Runway — كم شهراً تستطيع الاستمرار؟
Enter your cash, your monthly burn and your revenue to see the month you run out — and what hiring, cutting or raising does to that date.
Currency
النقد في البنك
الإيراد الشهري
المصروفات الشهرية
💡 What-If Scenariosسيناريوهات
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What runway actually measures
Runway is cash divided by net burn — what you have, over what you lose each month after revenue. Net burn is the part founders get wrong: it is monthly costs minus monthly revenue, not monthly costs. A startup spending 50,000 and earning 30,000 is burning 20,000, and has two and a half times the runway a gross-burn calculation would show. If revenue covers costs, net burn is zero and runway is unbounded. That is what the ∞ means here — not that the numbers are wrong.
How to read the number you get
Under 6 months is the zone where fundraising stops being a choice: investors can see the deadline, and a deadline they can see is priced into the terms. 6 to 12 months is a normal working position for a startup that has just raised. Over 18 months usually means you are either well funded or underinvesting in growth. The date matters more than the count. "We have 7.4 months" is abstract; "we are out of cash in March" is a decision.
Getting the inputs honest
Cash means money you can actually spend — bank balance, not committed-but-unsigned funding, and not receivables you have yet to collect. Burn should include the costs founders leave out: payment processing fees, the annual tools billed in one lump, taxes and end-of-service accruals. Use the revenue you collected last month, not the revenue you invoiced. In markets where 60-day payment terms are normal, those are very different numbers.
Questions founders ask
How many months of runway should a startup have?
Most investors want to see 12 to 18 months after a round closes — enough to hit the milestone that justifies the next raise, plus the months the raise itself takes. Below 6 months you are negotiating from a visible deadline.
Is runway calculated on gross burn or net burn?
Net burn: costs minus revenue. Gross burn ignores the money coming in and understates your runway, sometimes badly, for any startup with real revenue.
What should I count as cash?
Money in the bank you are free to spend. Not a signed term sheet, not an unpaid invoice, and not a credit line you have not drawn — none of those pay salaries on the day the account is empty.
How long does raising a round actually take?
Plan for it to overlap several months of burn rather than a single one, and start while the runway still gives you the option to walk away from bad terms. That is why the 6-month mark is treated as a floor rather than a target.
The other two numbers investors ask for
Unit economics — LTV, CAC and payback
Whether a customer earns you more than they cost, and how long you wait to get it back.
Market sizing — TAM, SAM and SOM
A bottom-up market size built from real customers and a real price.
All three are free and need no account. See the free tools or the startup templates.
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