SaaS Burn Rate & Runway Calculator
Enter your cash, revenue, and expenses — see exactly how many months of runway you have left, down to the date.
Calculate your runway
How to use this tool
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1
Enter your cash on hand. Whatever's currently in the business bank account.
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2
Enter your MRR and expenses. Your monthly recurring revenue and your total monthly operating costs.
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3
Read your runway. The tool calculates your net burn and shows the exact date your cash runs out at the current rate.
About This Tool
Burn rate is how much cash your business loses each month — expenses minus revenue. Runway is how many months your current cash lasts at that rate before hitting zero. Most founders think in vague terms like "a few months left," but an exact date makes the number impossible to ignore or round up in your head.
If your revenue already covers your expenses, burn is zero or negative — meaning there's technically no runway limit at your current numbers, and the tool reflects that instead of forcing a countdown.
Frequently Asked Questions
What counts as "monthly expenses"?
Everything the business spends in a typical month — salaries, software, hosting, contractors, ads, rent. The more complete this number is, the more accurate your runway.
What if my revenue is higher than my expenses?
You're profitable — the tool shows that directly instead of a countdown date, since at those numbers your cash isn't shrinking.
Is the exact date guaranteed?
No — it assumes your burn rate stays exactly the same every month, which real businesses rarely do. Treat it as a snapshot to recheck monthly as your numbers change.
Is my data stored anywhere?
No. Everything runs locally in your browser and disappears when you close the tab.