Customer Retention Rate Table: Retention rate by Customers at start
Reference table of retention rate for Customer Retention Rate across a range of customers at start values — exact, engine-computed figures you can read off at a glance.
Customer Retention Rate Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Retention rate
90.00%
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Customer Retention Rate Calculator
The Customer Retention Rate Calculator works out your retention rate in an instant. Enter customers at start, customers at end and new customers gained and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the customers at start.
- Enter the customers at end.
- Enter the new customers gained.
- Read off your retention rate — the calculator updates automatically, with no button to press.
Formula
The Customer Retention Rate Calculator uses the formula:
Retention rate = (Customers at end - New customers gained) ÷ Customers at start × 100
Worked example
For example, with customers at start of 200, customers at end of 220 and new customers gained of 40, the retention rate is 90.00%.
| Customers at start | 200 |
|---|---|
| Customers at end | 220 |
| New customers gained | 40 |
| Retention rate | 90.00% |
|---|
Results are estimates for educational use, not professional advice.
Frequently asked questions
Subtract new customers from end customers, divide by start customers, and multiply by 100. From 200 to 220 with 40 new is 90%.
Retention measures how many existing customers you kept, so new sign-ups are removed to avoid inflating the figure.
Retention and churn add up to 100%. A 90% retention rate means 10% churn.
Keeping customers is usually cheaper than acquiring new ones, and high retention drives long-term revenue.
Enter the customers at start. Enter the customers at end. Enter the new customers gained. Read off your retention rate — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Customer Retention Rate: Formula, Steps & Examples
Learn how to calculate Customer Retention Rate — the formula explained step by step, with worked examples and a free calculator to check your answer.