See how fast your business is spending its cash and how many months of runway you have left. Enter your starting balance, ending balance, and the number of months. Free, and no signup needed.
Burn rate per month$0
Cash runway0 months
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Subtract your ending cash balance from your starting balance, then divide by the number of months in the period. That gives your average burn rate per month, which is exactly what this calculator does.
Gross burn rate is your total monthly cash spend. Net burn rate subtracts any revenue you bring in, so it is gross burn minus monthly revenue. Net burn shows how fast your cash is actually falling.
Cash runway is how many months your business can keep operating before it runs out of money at the current burn rate. Divide your remaining cash by your monthly burn rate to get it.
There is no single safe number, it depends on your cash on hand and your revenue. A common rule of thumb is to keep at least six months of runway, so your burn rate should leave you at least that much cushion.
Cut non-essential spending, delay large or long-term commitments, negotiate better terms with suppliers, and focus on the work that brings in revenue. Small recurring savings extend runway more than one-off cuts.
A negative burn rate means your business brought in more cash than it spent over the period, so your cash balance grew. That is a healthy sign that you are cash-flow positive.
List your expenses, separate essential from non-essential, and cut what does not drive revenue. Control variable costs first, avoid non-critical long-term commitments, and review the numbers regularly.
A high burn rate with a short runway means you have limited time before you need more cash. Treat it as a prompt to cut non-essential spend, protect revenue-driving activity, and plan your next funding or growth step early.
