Cash Runway Calculator
Cash runway is how many months your business can keep operating before it runs out of money, at your current burn rate. It's the number every founder watches most closely.
Your details
- Net monthly burn
- $30,000.00
Formula
Net burn = monthly expenses − monthly revenue. Runway = cash on hand ÷ net burn. If revenue covers expenses, the runway is effectively unlimited.
How it works
Runway turns your bank balance into a countdown. Founders typically want to raise or reach profitability well before it hits zero — a common target is keeping at least 6–12 months of runway at all times.
Frequently asked questions
How much runway should I keep?⌄
Many startups aim for at least 12–18 months after a raise and never let runway drop below about 6 months, which is the window needed to raise more or cut costs.
What is net burn?⌄
Net burn is your monthly cash outflow after revenue — expenses minus revenue. Gross burn ignores revenue and just counts total spending.
What if I'm profitable?⌄
If monthly revenue meets or exceeds expenses, your net burn is zero or negative and your runway is effectively unlimited — you're adding cash, not depleting it.
Sources & methodology
Cash ÷ (expenses − revenue). Assumes a constant burn; excludes upcoming changes in spend or revenue.
Embed this calculator⌄
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