Cash runway calculator
How many weeks of cash does your business actually have? Enter two numbers and find out. Built for e-commerce and product sellers — no signup, nothing stored.
Enter your cash on hand and monthly expenses to see your runway.
A planning estimate from the numbers you typed — a straight-line projection with no seasonality, the same v1 model Still's in-app 13-week forecast uses. Nothing you enter here is saved or sent anywhere.
Cash ÷ weekly outflow. That's it.
Your monthly expenses become a weekly rate (monthly × 12 ÷ 52). Your cash balance divided by that weekly rate, times seven, is your runway in days. No black box — it's the same formula Still's in-app 13-week cash forecast runs on.
The difference in the product: you never type the inputs. Still derives your outflow rate from your live year-to-date P&L — inventory, fees, ads, payroll, all of it — anchors on your real bank balance, and re-checks the runway continuously. This calculator is one small piece of what Still tracks automatically.
Cash runway questions
How do you calculate cash runway?
Cash runway is your cash on hand divided by your outflow rate. This calculator converts your monthly expenses to a weekly rate (monthly × 12 ÷ 52), then divides your cash balance by it: runway days = (cash ÷ weekly outflow) × 7. It is the same formula Still uses in-app, where the outflow rate comes from your live year-to-date P&L instead of a number you type.
Should I use gross burn or net burn for runway?
Both are useful and they answer different questions. Gross-burn runway (cash ÷ expenses) answers "if revenue stopped today, how long do I have?" — the conservative planning number this calculator leads with. Net-burn runway subtracts revenue first and answers "at current sales, when do I run out?" Add your monthly revenue above to see the net view too.
Why does runway matter more for e-commerce sellers?
Product businesses put cash into inventory months before it comes back as revenue, and marketplace payouts arrive on the platform's schedule, not yours. A healthy P&L can still hide a tight cash position — which is why runway is worth checking against your actual bank balance, not your profit number.
Is this calculator accurate?
It is honest arithmetic on the numbers you enter — a straight-line projection with no seasonality, the same v1 model behind Still's in-app 13-week forecast. Treat it as a planning estimate: real months are lumpy, especially around inventory reorders.
Stop re-typing your numbers.
This is one small piece of what Still tracks automatically — runway, P&L, tax set-aside, and compliance, from your live numbers.
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