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Date Difference Calculator
Count the exact time between two dates in years, months, weeks, days — with or without weekends.
Pick a start and end date to see the duration between them.
What this does
Pick a start and end date to get the full duration between them: a years-months-days breakdown plus totals in weeks, days and business days (excluding weekends).
How to use it
- 1Choose the start date.
- 2Choose the end date.
- 3Read the breakdown and the total counts, including business days.
Examples
- Jan 1 to Dec 31, 2025 = 364 days
- Business days between two dates, weekends excluded
Frequently asked questions
- Does the count include both the start and end dates?
- The difference is the number of days between the two dates. Whether the endpoints are 'included' depends on your use — the tool shows the raw gap so you can add one if you need an inclusive count.
- How are business days counted?
- Business days count Monday through Friday and skip Saturdays and Sundays. Public holidays are not subtracted, since they vary by country.