Unique Customers: Distinct Buyers in Period

The count of distinct customers who placed at least one order in the period.

Formula

Unique Customers = COUNT DISTINCT ( Customer ID ) WHERE order placed in period

Formula Components

Metric	Definition
Customer ID	Unique identifier for each customer from Shopify

Metadata
Type	Number
Data Source	Shopify
Aggregation	Count Distinct

Example

Your store served 2,847 unique customers in February:

Week	Unique Customers	Orders	Avg Orders/Customer
Week 1	712	892	1.25
Week 2	684	821	1.20
Week 3	756	934	1.24
Week 4	695	847	1.22

The monthly unique customers (2,847) is less than the sum of weekly counts because some customers purchased in multiple weeks.

How It Works

Each customer is counted once regardless of how many orders they placed. A customer who placed 5 orders counts the same as one who placed 1 order. This metric uses Shopify customer identifiers to deduplicate across the selected time period.

When to Use

Scenario	Action
Measuring acquisition reach	Track unique buyers separate from order volume
Calculating repeat rate	Compare unique customers to total orders
Sizing customer base	Understand how many people you served
Cohort analysis	Track unique customers by acquisition period

Metric	Relationship
New Customers	First-time buyers subset
Returning Customers	Repeat buyers subset
Orders	Total order count (may exceed unique customers)
Avg Orders Per Customer	Orders ÷ Unique Customers

See all Customers metrics →

Customers New Customers

⌘I

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics