Runway Calculator

Calculate your startup's cash runway and time to break-even.

How much you spend per month

Basic Runway = Cash Balance / Net Monthly Burn\nNet Burn = Monthly Expenses - Monthly Revenue\nWith Growth: More complex formula accounting for revenue growth
Example:\nCash: $500,000\nBurn: $50,000/mo\nRevenue: $20,000/mo\nGrowth: 5%/mo\n\nNet Burn = $30,000/mo\nBasic Runway = 16.7 months\nWith Growth = ~20 months

What is runway?

The number of months your business can operate before running out of cash, based on current burn rate and revenue.

What is burn rate?

The amount of cash your company spends each month. Net burn = expenses minus revenue.

How much runway is safe?

Most investors recommend 12-18 months. Less than 6 months is critical. More than 24 months is very comfortable.

How do I extend runway?

Reduce expenses, increase revenue, raise capital, or achieve profitability. Focus on unit economics and efficiency.

Should I account for revenue growth?

Yes, if you have consistent growth. Growing revenue extends runway beyond the basic calculation.

What if I am profitable?

If revenue exceeds burn, you have infinite runway (no cash depletion). Focus on growth and margins instead.

When should I raise funding?

Start fundraising when you have 6-9 months of runway left. It typically takes 3-6 months to close a round.

How do I calculate net burn?

Net Burn = Monthly Operating Expenses - Monthly Revenue. This is your actual cash depletion per month.