Tool
Runway calculator
Cash, burn and, if you want it, burn growth in. Months of runway out, with every step shown.
You put in
- Cash in the bank
- Net burn a month
- Burn growth, if any
Calculate Divides, month by month
You get back
- Runway in whole months
- Every step of the working
Diagram: World Enterprise Group Incorporated. Illustrative: it shows the working, not any figure of yours.
Your numbers stay on this page. Nothing is saved or sent anywhere, and nothing is put in the address bar. Use one currency for every amount. The results carry no currency sign.
How each number is worked out
Every result above comes from the formula in this table. Whichever you report, say which one you used and what you assumed.
| Result | Formula | Assumptions |
|---|---|---|
| Runway at level burn | Cash on hand divided by net burn per month, rounded down to one decimal place. |
|
| Runway with growing burn | The first month uses the net burn you entered. Each later month uses the month before it multiplied by 1 plus the growth percent divided by 100. Add up the months until the next one would use more than the cash left. Runway is the whole months funded plus the cash left divided by that next month’s burn, rounded down to one decimal place. |
|
Your numbers stay on this page
The calculator works in your browser. It sends nothing, it saves nothing, and it does not put your numbers in the address bar, so closing the tab removes them. The page makes no request after it loads, and you can confirm that in your browser’s network panel.
What the results are not
The results are arithmetic on the numbers you typed. They are not advice, a forecast, or a statement about whether anyone will invest, and WE makes no promise of funding. The calculator cannot tell whether an entry is right. It does not say how much runway is enough, because that depends on your plan and no source supports a number.
Level burn and growing burn
Runway at level burn tells you what happens if nothing changes, and something will. It is the same division the metrics calculator uses for runway. The second result lets you try a burn that grows by a percent each month, and the working shows each step so you can check it by hand.
Round down
Runway is rounded down to one decimal place, because a figure rounded up flatters the position. The article on runway and burn works through one invented example.
Request the brief: Funding paths
Read the open abstract first. The full brief arrives by email after you ask for it.
WE makes no promise of funding.