Tool
Raise calculator: runway and raise size from your burn
Enter your cash and your monthly burn. You get the smallest raise that funds your next milestones and the months it takes to raise again, and how long the amount you plan to raise lasts.
The arithmetic runs in this page. Nothing you enter is stored or sent. If you choose to carry the result into a request, it travels only in this browser tab.
Using rupees or euros? The arithmetic is the same; read $ as your currency.
Your result
- Raise at least
- $0
- Runway
- 0 months
- Against the 24 months you need
- 0 months spare
Send your deck with this result, and I check whether the ask, the runway and the model agree.
How the result is worked out
Average monthly burn A = (B0 + B1) ÷ 2. Months to fund T = M + F. Raise = A × T − C, rounded up to the next $25,000; if 0 or less, $0. Runway = (C + P) ÷ A, rounded down to whole months. Spare or short = Runway − T.
A straight-line average: if you hire early, real burn runs higher. Revenue counts only through net burn. This is arithmetic on your inputs, not a forecast.
A worked example, in round numbers
No cash in the bank, burn of $15,000 a month today and $45,000 once the team is hired, 18 months to the milestones and 6 months to raise again. A is $30,000 and T is 24 months. A × T is $720,000, so the raise is at least $725,000. With $500,000 raised, runway is 16 months: 8 months short of the 24.
Updated
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