Free Startup Tool

Free Runway & Burn Rate Calculator

See exactly how many months of runway you have left based on cash, expenses, and revenue. No signup.

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How It Works

Step 1

Enter Cash on Hand

How much money is currently in the bank?

e.g. $60,000

Step 2

Enter Monthly Expenses

Total monthly spend — salaries, tools, hosting, everything.

e.g. $8,000/mo

Step 3

Enter Monthly Revenue

How much are you currently bringing in? Enter 0 if pre-revenue.

e.g. $1,500/mo

Step 4

See Your Runway

Get your net burn rate and exactly how many months you have left.

e.g. 8.1 months of runway

Frequently Asked Questions

What is startup runway?

Runway is how many months your startup can operate before running out of cash, calculated as cash on hand divided by your net monthly burn rate (expenses minus revenue).

What is burn rate?

Burn rate is how much cash your startup spends each month. Net burn rate subtracts your monthly revenue from your monthly expenses — if revenue exceeds expenses, you're profitable and not burning cash at all.

Is this runway calculator free?

Yes — calculating your runway and burn rate is completely free with no signup required. Enter three numbers and get instant results.

What's a healthy amount of runway?

Most advisors recommend keeping at least 12-18 months of runway at all times, so you have room to raise your next round or hit profitability without panic. Under 6 months is generally considered a danger zone.

How do I extend my runway?

Two levers: cut expenses (the fastest lever) or grow revenue (the more durable one). Either way, the biggest risk to runway is spending months building features or products nobody actually wants — validate before you build to protect your remaining cash.

What should I do before spending my next month of runway?

Before committing more cash to a feature, pivot, or new product, check whether the underlying pain point is real. Our free Idea Validator checks your idea against actual complaints from Reddit, Hacker News, and Indie Hackers so you're not guessing with your remaining runway.