Cash Runway & Burn Rate Calculator
Find out how many months of runway you have left. Enter your cash, burn and revenue to see gross burn, net burn and the month your cash runs out — accounting for revenue growth.
Your numbers
How runway and burn are calculated
Gross burn is your total monthly cash out (all expenses). Net burn is what you actually lose each month after revenue: expenses − revenue. Your runway is how long the cash lasts: in the simplest case, cash ÷ net burn.
This calculator goes a step further and grows your revenue month over month, so as revenue rises your net burn shrinks and your runway stretches — which is why the dynamic runway is usually longer than the static cash ÷ burn figure. If revenue overtakes expenses before the cash runs out, you reach cash-flow break-even and runway is effectively unlimited.
Most investors want to see 18–24 months of runway at a raise, because fundraising takes time and you need enough to hit the milestones that justify the next round. Under six months is a red flag — see cash flow forecasting and use of funds for what to do about it.
Email yourself these numbers
Get the result in your inbox plus occasional SaaS-finance playbooks. No spam.
Plan the whole picture in Adlega
Adlega turns these one-off numbers into a live financial model for your SaaS — projections, scenarios, dashboards.