Related Tools
How to Use
- 1Enter the start date in the first field.
- 2Enter the end date in the second field.
- 3Optionally enable "Include end date" to count the final day in totals.
- 4Review breakdown, totals, and business days (weekends excluded).
- 5Use "Swap Dates" or reset to today for quick adjustments.
About Date Difference Calculator
The Date Difference Calculator computes exact duration between two dates with a full breakdown (years, months, days) and aggregate totals (days, weeks, months, hours, minutes).
It also calculates business days by excluding weekends and supports optional end-date inclusion, which is useful for contracts, SLAs, and project planning.
Frequently Asked Questions
How are business days calculated?
Business days exclude Saturdays and Sundays. Public holidays are not included in the calculation.
Can I enter dates in any order?
Yes. If the end date is before the start date, the calculator automatically swaps them.
What does "Include end date" change?
When enabled, the ending day is counted in totals. When disabled, calculations use the standard exclusive end-date approach.
What is the maximum date range supported?
Any date range is supported. Results are accurate for hundreds of years in either direction.