Unit Economics Calculator
Calculate customer lifetime value, LTV-to-CAC ratio, gross profit per customer, and CAC payback period to better understand the economics of acquiring and serving each customer.
Calculate Unit Economics
Enter ARPU, gross margin, monthly churn rate, and customer acquisition cost.
What Is a Unit Economics Calculator?
A Unit Economics Calculator helps evaluate the financial performance of an individual customer or unit of business. It focuses on how much value a customer generates compared with the cost required to acquire and serve that customer.
Unit economics are especially useful for subscription companies, SaaS businesses, ecommerce brands, marketplaces, mobile apps, and other businesses that track customer acquisition and retention.
How to Use the Unit Economics Calculator
1. Enter Revenue & Margin
Enter monthly ARPU and the gross margin percentage generated from each customer.
2. Enter Churn & CAC
Add the monthly customer churn rate and average customer acquisition cost.
3. Review Results
Calculate LTV, LTV:CAC ratio, monthly gross profit, and CAC payback period.
How Does the Unit Economics Calculation Work?
This calculator uses a simplified subscription-based unit economics model. It first estimates monthly gross profit per customer by multiplying monthly ARPU by gross margin.
Customer lifetime value is then estimated by dividing monthly gross profit per customer by the monthly churn rate.
Unit Economics Example
| Metric | Example Value |
|---|---|
| Monthly ARPU | $100 |
| Gross Margin | 70% |
| Monthly Churn Rate | 5% |
| Customer Acquisition Cost | $300 |
In this example, the estimated lifetime value of a customer is $1,400, while the business spends $300 to acquire that customer.
How to Interpret the LTV-to-CAC Ratio
The LTV-to-CAC ratio compares the estimated economic value of a customer with the cost required to acquire that customer.
| LTV : CAC | General Interpretation |
|---|---|
| Below 1.0x | Estimated customer value is lower than acquisition cost. |
| 1.0x – 2.0x | Customer value exceeds acquisition cost, but economics may be relatively tight. |
| 2.0x – 3.0x | The business generates meaningfully more customer value than acquisition cost. |
| 3.0x+ | Generally indicates stronger unit economics, assuming the underlying estimates are reliable. |
Key Unit Economics Metrics
Average Revenue Per User (ARPU)
ARPU measures the average amount of revenue generated by one customer during a specific period. This calculator assumes monthly ARPU.
Gross Margin
Gross margin represents the percentage of revenue remaining after direct costs associated with delivering the product or service.
Customer Acquisition Cost (CAC)
CAC measures the average sales and marketing cost required to acquire one new customer.
Customer Lifetime Value (LTV)
LTV estimates how much gross profit a customer may generate throughout the expected customer relationship.
Churn Rate
Churn rate represents the percentage of customers who stop using or paying for a service during a given period.
CAC Payback Period
CAC payback estimates how long it takes for gross profit from a customer to recover the original customer acquisition cost.
Why Are Unit Economics Important?
A company can grow revenue while still having weak underlying economics. Unit economics help show whether customer growth is creating or consuming economic value at the individual customer level.
Businesses can use these metrics when reviewing pricing, customer acquisition channels, retention, marketing efficiency, product margins, and growth strategy.
Tracking unit economics over time can also help identify whether improvements in retention, pricing, gross margin, or acquisition efficiency are strengthening the business model.
How Can a Business Improve Unit Economics?
Stronger unit economics can come from several areas. A business may improve customer retention, increase average revenue per customer, improve gross margins, or reduce customer acquisition costs.
For example, reducing monthly churn can increase estimated customer lifetime and therefore increase LTV. Similarly, lowering advertising and sales costs can reduce CAC and shorten the payback period.