How do you calculate months of runway?

Divide your current cash balance by your net monthly burn rate. For example, $500,000 cash ÷ $50,000/month burn = 10 months of runway.

When should I start fundraising based on runway?

Start fundraising when you have at least 6–9 months of runway remaining. A typical seed or Series A round takes 3–6 months to close.

Months of Runway Calculator — Cash Runway Estimator

Estimate how many months your current cash balance will last given your net monthly burn. Essential for startup financial planning and investor conversations.

Principal ($)

Annual Rate (%)

Years

Compounding / Year

$ Finance Disclaimer: These calculators are for educational and illustrative purposes only. Results do not constitute financial advice. Consult a licensed financial advisor before making investment or borrowing decisions.

How to Use

Enter the values for the scenario you are assessing. Estimate how many months your current cash balance will last given your net monthly burn. Essential for startup financial planning and investor conversations. Use the months of runway result to inform your calculation.

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Months of Runway Calculator — Cash Runway Estimator

How to Use

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Frequently Asked Questions

How do you calculate months of runway?

When should I start fundraising based on runway?