How to Calculate Average Customer Lifespan (using Shopify) Part 2

5 minutes

Average Customer Lifespan influences your Customer Lifetime Value, which tells you how much revenue you should expect from each customer. This number is important as you consider the costs associated with acquiring new customers, and whether you should invest more or less to find new customers.

Step 1: Create a Custom Report in Shopify

  • In your Shopify Portal, navigate to Analytics > Reports > Custom Reports > View All Custom Reports
  • Select “Create Custom Report”

We will be adding the columns we need in order to complete the calculation. To add a column:

  • Adjust your timeframe to the time you began selling on Shopify by clicking on “Date range” (If you are doing analysis over a shorter timeframe, adopt that range).
  • Select “Edit Columns”
  • Add “Customer Name”, “Customer Email”, “First Order Day”, “Last Order Day”, and “Orders to Date”
  • Export your report to CSV and save to your desktop

Step 2: Calculate the Sum of Lifespans for your Customers

We’ll be completing the remainder of the calculation in a spreadsheet. Open your exported CSV in Excel or Google Sheets.

  • Create a calculation to subtract Last Order Day by First Order Day. This number is reported in number of days.
  • Sum your Customer Lifespan column

Step 3: Calculate the Total Number of Customers

  • Use the built-in “Count” function to calculate the total number of customers

Step 4: Calculate Average Customer Lifespan

  • Divide Sum of Customer Lifespan by Total Number of Customers

That’s it! For our scenario above, the Average Customer Lifespan for this company is 843.33 days*.

*When using this value in your Customer Lifetime Calculation, remember to convert it back to years by dividing by 365

Conclusion: How do I use it?

Average Customer Lifespan tells you how long your typical customer remains a customer. This computation is part of the larger Customer Lifetime Value (CLV) calculation which is used to determine the overall revenue expected from each additional customer you acquire for your business.

As you contemplate your allocation of resources, it is important to monitor your CLV and Customer Acquisition Cost (CAC) to ensure that you are receiving a positive return on marketing/advertising spend.

Good luck!

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