Burn Rate & Runway Calculator

What is this?

Burn rate is the speed at which a startup spends its cash reserves. Gross burn is total monthly spending, while net burn subtracts revenue. Runway is how many months you can operate before running out of cash at your current net burn rate. These are the most fundamental metrics every founder and investor tracks.

Why it matters

Running out of cash is the number one reason startups fail. Knowing your runway gives you a clear deadline for when you need to either reach profitability or close your next funding round. Investors will always ask about your burn rate and runway during due diligence, so having precise numbers builds credibility.

How to use this calculator

Enter your current bank balance, monthly revenue (if any), and total monthly expenses. Optionally add a monthly expense growth rate to account for planned hiring or scaling costs. The calculator shows your gross burn, net burn, and runway in months both with and without expense growth factored in.