Customer Retention Rate Calculator
Work out retention rate from start, end and new customer counts.
Work out what share of your customers have bought more than once.
Both figures should cover the same window — twelve months is a common choice for general retail.
Repeat purchase rate
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The Repeat Purchase Rate Calculator turns repeat customers and total customers into a repeat rate instantly, with one-time buyers counted and the revenue value of a five-point improvement estimated.
Repeat purchase rate is the cheapest growth metric in e-commerce: the share of customers who came back and bought again. Because the second sale carries no acquisition cost, a few points of movement here is usually worth more than the same effort spent on new traffic.
Enter how many customers bought more than once and your total customer count for the period, and the rate appears straight away, with the number of one-time buyers sitting alongside it. Add your average order value and the calculator shows what a five-point improvement would be worth in extra orders and revenue.
The rate updates live as either figure changes.
The other side of the number, counted and expressed as a share.
Estimates the extra orders and revenue a five-point gain would bring.
No sign-up, no data sent anywhere.
Customers who placed more than one order in the period.
Every customer who bought at all during that period.
Optional — shows what a five-point lift in the rate would be worth.
One-time buyers and their share appear alongside.
Repeat purchase rate = Customers with more than one order ÷ Total customers × 100. 480 repeat customers out of 2,000 is a repeat purchase rate of 24%.
It depends almost entirely on what you sell. Consumables and subscriptions can see a large majority of customers return, while high-ticket or one-off purchases may sit in the low single digits and still be a healthy business.
Pick a window long enough to cover a realistic repurchase cycle — twelve months is common for general retail, shorter for consumables — and then keep it fixed so the trend stays comparable.
Retention rate tracks a specific cohort of customers across a period. Repeat purchase rate is a snapshot of purchase behaviour: what share of all buyers bought more than once, regardless of when they first arrived.
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