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- Locate a 'Date field' in the Data pane (identified by a calendar icon). Right click on the field, select 'Create', then click 'Calculated Field'.
- The Calculated Field dialog box will appear. Enter a new name for the calculated field.
- Enter the following DATEDIFF formula:
How to Use Datediff in Tableau
Use this step-by-step demo to learn how to use datediff in Tableau.
📌 Why this matters
Date calculations unlock powerful business insights beyond simple time tracking. You can analyze shipping efficiency, measure customer lifecycle stages, identify seasonal patterns, and spot operational bottlenecks. The real advantage emerges when you combine these calculations with other dimensions—suddenly you're comparing delivery times across regions, tracking how processing speeds change over quarters, or identifying which products consistently ship late. This transforms raw timestamps into actionable metrics that drive decisions about inventory, staffing, and customer satisfaction strategies.
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