Finance · Free Interactive Tool
Unit Economics Calculator
Find out if every sale actually makes you money.
Your Numbers
The Result
The Operator's Read
Healthy. An LTV:CAC of 16.8x with 1-month payback is fundable — you can afford to spend more to grow.
Built by The Crimson Bench · Educational tool, not financial advice
About the Unit Economics Calculator
Enter your price, costs, and acquisition spend. This tool returns your gross margin, CAC, LTV, LTV:CAC ratio, and CAC payback — the five numbers investors and operators judge a business on.
How the Unit Economics Calculator Works
5 inputs in, 6 results out — computed live on your device. Here's exactly what it uses.
| Input | Example value |
|---|---|
| Average sale price / ARPU | $100 |
| Variable cost per unit | $30 |
| Monthly sales & marketing spend | $10,000 |
| New customers per month | 100 |
| Avg. customer lifetime (months) | 24 |
Worked Example
Using the example inputs above, the tool returns:
Gross margin / unit
$70.00
Gross margin %
70.0%
CAC
$100.00
LTV
$1,680
LTV : CAC
16.8x
CAC payback
1.4 mo
The Operator's Read
Healthy. An LTV:CAC of 16.8x with 1-month payback is fundable — you can afford to spend more to grow.
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 Unit Economics Calculator calculate?
Enter your price, costs, and acquisition spend. This tool returns your gross margin, CAC, LTV, LTV:CAC ratio, and CAC payback — the five numbers investors and operators judge a business on. It takes 5 inputs — Average sale price / ARPU, Variable cost per unit, Monthly sales & marketing spend, New customers per month, Avg. customer lifetime (months) — and returns Gross margin / unit, Gross margin %, CAC, LTV, LTV : CAC, CAC payback.
How do I use the Unit Economics 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 Unit Economics 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 Unit Economics 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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