How it works
Revenue is subtracted from monthly costs to give net burn; cash on hand divided by that figure is the runway.
Example
$415,000 against $39,000 of net burn is 10.6 months of runway.
This tool is for estimation and education, not financial, tax, or legal advice.
Frequently asked questions
Is this an accounting system?
No. Each tool answers one question from figures you already have, with the method shown.
Does the calculator send my numbers anywhere?
No. The calculation runs locally in your browser.
Which figures should I use?
Whatever period you are judging — a month, a quarter, a year — as long as every input covers the same one.
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