Free Calculator

Cash Runway Calculator

Enter your cash balance and monthly burn — get your exact runway in months, your runway-out date, and a free 13-week forecast template. No signup required to calculate.

Runway
—
months
Runway-Out Date
—
date your cash hits zero at current burn
Daily Burn
—
cash you burn per day

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Common Questions

How is runway calculated?
Runway (months) = Current Cash Balance ÷ Monthly Net Burn. If you have incoming receivables, we add them to your cash balance for the calculation since they reasonably arrive before zero. Runway-out date is today + (runway months × 30 days).
What counts as "cash"?
Operating bank balances + savings + money market funds (MMF) + short-duration treasuries you can liquidate within 30 days. Don't count locked-up CDs, restricted cash, or LOC headroom.
What's "net burn"?
Monthly cash outflows minus monthly cash inflows (revenue collected). If you collect $500K and spend $620K, net burn is $120K. Use the trailing 3-month average — single months can be noisy.
When is runway "healthy"?
Generally: under 6 months is critical (raise or cut now), 6–12 months is caution (tighten + plan raise), 12–18 months is healthy, 18+ months is comfortable. Industry-specific norms vary — venture-backed SaaS often runs 18+, bootstrapped services firms can operate fine at 4–6.
How does TreasuryFlow improve on this calculator?
A static calculator uses one number for cash and one number for burn. TreasuryFlow connects to your banks via Plaid, pulls the real numbers every morning, projects forward as a 13-week rolling forecast with confidence bands, and emails you the daily delta. Try it free for 14 days.