Stable Numbers
Date Difference Calculator
Work out the exact difference between two dates with optional times. Get totals in years, months, days, hours, and minutes. Include or exclude weekends, and subtract your own holiday list. There is also an add or subtract duration mode for quick deadlines.
Business day options
Useful for SLA windows.
These dates are excluded from business day counts.
Exact difference
- Years, months, days:
- Total days:
- Total hours:
- Total minutes:
Working time view
- Weekdays:
- Weekends:
- Business days (excl. weekends + holidays):
- Holidays excluded:
Resulting date
Date: (local time)
Results use your device time and local time zone. If your system clock is wrong, outputs may be off.
About this calculator
This tool gives you a precise difference between two dates and optional times, with a breakdown in calendar years, months and days, and totals in days, hours and minutes. For planning work, the business-day view can exclude weekends and your own holiday list, which is useful for SLAs and project schedules.
The add or subtract mode is ideal for deadlines and backtiming. Pick a base date, add months and days, then fine-tune with hours and minutes. Leap years and different month lengths are handled for you.
For repeatable work, use the share link to keep your setup, and export a CSV for notes. All processing happens in your browser.
Explore more in the calculators hub.