Finance · Free Interactive Tool
Startup Runway Calculator
Know exactly how many months of cash you have left.
Your Numbers
The Result
The Operator's Read
12.5 months of runway. Raise with 9–12 months left, not 3 — leverage disappears when you're desperate.
Built by The Crimson Bench · Educational tool, not financial advice
About the Startup Runway Calculator
Enter your cash, monthly revenue, and monthly expenses. This tool returns your net burn and the number of months of runway remaining at your current rate.
How the Startup Runway Calculator Works
3 inputs in, 3 results out — computed live on your device. Here's exactly what it uses.
| Input | Example value |
|---|---|
| Cash in the bank | $500,000 |
| Monthly revenue | $20,000 |
| Monthly expenses | $60,000 |
Worked Example
Using the example inputs above, the tool returns:
Net monthly burn
$40,000
Runway remaining
12.5 mo
Cash-out in
1.0 yr
The Operator's Read
12.5 months of runway. Raise with 9–12 months left, not 3 — leverage disappears when you're desperate.
Assumptions & Limitations
- •This is a single-point calculator — it answers one question at a time. For a full time-based projection, use the matching Toolkit Pro simulator.
- •Defaults are illustrative. Replace them with your real numbers before relying on the result.
- •Educational tool only — not financial, investment, tax, or legal advice.
Frequently Asked Questions
What does the Startup Runway Calculator calculate?
Enter your cash, monthly revenue, and monthly expenses. This tool returns your net burn and the number of months of runway remaining at your current rate. It takes 3 inputs — Cash in the bank, Monthly revenue, Monthly expenses — and returns Net monthly burn, Runway remaining, Cash-out in.
How do I use the Startup Runway Calculator?
Enter your figures in the fields above and the result updates instantly. No signup, no limits, and nothing leaves your browser — the math runs on your device.
Is the Startup Runway Calculator free?
Yes, completely free. For the full time-based simulation — projection tables, scenarios, Excel/PDF export, and AI analysis — see the matching Toolkit Pro simulator.
Who built this tool?
The Crimson Bench's Ivy League-educated operators — the same people we deploy into C-suites. It uses the exact method they'd apply in an engagement.
Is this financial advice?
No. The Startup Runway Calculator is an educational tool for directional planning — not financial, investment, tax, or legal advice.
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The Crimson Bench · Est. 2002 · Founded in New York City
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