Yes, Shopify has built-in features to show you the purchase history for any given customer, which includes the number of products they have bought.
Here is where you can find this information:
1. The Customer Profile Page
The primary and simplest place to see a customer's total purchase history is on their individual customer page in your Shopify admin:
Go to your Shopify Admin.
Click Customers in the left-hand navigation.
Search for and click on the specific customer's name.
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On the customer's profile page, you will see a summary box (usually at the top or side) that displays:
Total Spent: The total amount of money they have spent in your store.
3 Total Orders: The total number of orders they have placed.
Below this summary, you will find a full list of all their past orders. By reviewing this list, you can easily see the individual items and quantities they purchased in each transaction, allowing you to calculate the total number of products they have ever bought.
2. Analytics and Reports
For a more aggregated view and to look for trends across all customers, you can use Shopify's built-in reports:
Go to Analytics > Reports in your Shopify admin.
5 Check the Customer reports or Sales reports.
While these reports may not give you a single "total products bought" number for every customer in a single column, reports like "Customers over time" or "Returning customers" will provide key metrics like:
Number of orders placed by each customer.
6 Average order count per customer.
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You can also use the "Sales by customer name" report and add the "Product title" dimension (if available on your plan) to create a custom view of all products bought by each customer, which you can then export and summarize.
Note on Counting Products vs. Orders
Keep in mind the distinction between:
Orders: The number of separate times a customer checked out (e.g., 5 orders).
Products/Items: The total quantity of individual items purchased across all orders (e.g., 15 items across 5 orders).
While the customer profile gives you the total number of Orders, you'll need to manually count the items or use a report (or a third-party analytics app) for the exact total number of Items/Products purchased.