Total product units purchased by returning customers who have previously placed an order.
| Metric | Definition |
|---|
| Units | Product quantity from order line items |
| customer_type = returning_customer | Filters to orders from customers who have purchased before |
| Metadata | |
|---|
| Type | Number |
| Data Source | Shopify |
| Aggregation | Sum |
Example
Your store sold 5,895 units to returning customers this month:
| Week | RC Units | RC Orders | Units/Order |
|---|
| Week 1 | 1,412 | 398 | 3.5 |
| Week 2 | 1,523 | 435 | 3.5 |
| Week 3 | 1,489 | 426 | 3.5 |
| Week 4 | 1,471 | 420 | 3.5 |
How It Works
Returning Customer Units Sold sums the quantity of all line items from orders placed by customers who have previously purchased. A customer is classified as “returning” if they have at least one prior order in Shopify. This metric helps you understand the purchasing volume of your loyal customer base.
When to Use
| Scenario | Action |
|---|
| Measuring loyalty basket size | Compare units per order for returning vs new customers |
| Evaluating retention programs | Track if repeat buyers purchase more units after loyalty launch |
| Inventory planning | Forecast demand from returning customer segments |
| Lifetime value analysis | Monitor unit volume growth from your retained base |
| Metric | Relationship |
|---|
| Units Sold | Total units across all customers |
| New Customer Units Sold | Units from first-time buyers (compare to this metric) |
| Returning Customer Units Per Order | This metric ÷ Returning Customer Orders |
| Returning Customers | Count of repeat buyers |
