Revenue · Free Interactive Tool
Rule of 40 Calculator
Are you balancing growth and profit like investors want?
Your Numbers
The Result
The Operator's Read
50 — you pass. High growth can justify low margin, and vice versa; you're in the fundable zone.
Built by The Crimson Bench · Educational tool, not financial advice
About the Rule of 40 Calculator
Add your growth rate and profit margin. If the sum is 40 or more, you’re balancing growth and profitability at the level investors reward.
How the Rule of 40 Calculator Works
2 inputs in, 1 results out — computed live on your device. Here's exactly what it uses.
| Input | Example value |
|---|---|
| YoY growth rate | 60% |
| Profit margin | -10% |
Worked Example
Using the example inputs above, the tool returns:
Rule of 40 score
50
The Operator's Read
50 — you pass. High growth can justify low margin, and vice versa; you're in the fundable zone.
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 Rule of 40 Calculator calculate?
Add your growth rate and profit margin. If the sum is 40 or more, you’re balancing growth and profitability at the level investors reward. It takes 2 inputs — YoY growth rate, Profit margin — and returns Rule of 40 score.
How do I use the Rule of 40 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 Rule of 40 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 Rule of 40 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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