Date difference calculator
Calculate the exact number of days, weeks, months and years between any two dates. Optionally include time for hour-level precision.
- Free, no sign-up
- No data stored
- Reviewed 2026-01-15
Your details
Results
Difference
:value difference
22 Aug 2026 00:00 → 22 Aug 2026 00:00
- Total days
- 0
- Total weeks
- 0.00
- Total months
- 0
- Total hours
- 0.0
- Total minutes
- 0
- Working days
- 0
- Weekend days
- 0
Iso duration
P0DUnits table
| Unit | Value |
|---|---|
| Total years | 0.0000 |
| Total months | 0.000 |
| Total weeks | 0.000 |
| Total days | 0 |
| Total hours | 0.00 |
| Total minutes | 0 |
| Total seconds | 0 |
About the Date Difference Calculator
Find the exact duration between two dates in multiple units: days, weeks, months and years. Optionally add times for hour-and-minute precision. Choose whether to include the end date in the count.
How to use the Date Difference Calculator
- Enter the start date.
- Enter the end date.
- Optionally add times.
- Choose whether to include end date.
- View the difference in all units.
Frequently asked questions
Does "include end date" add one day?
Yes. Useful for counting inclusive ranges (e.g. event start to end inclusive of both days).
Can I use past and future dates?
Yes. Any combination works. If the start is after the end, the result shows a negative duration.
How are months counted with different lengths?
Calendar months are counted from day-to-day. 31 Jan to 28 Feb = 1 month (end of Feb).