Date Difference Calculator
Count the days between two dates — total, weekdays-only, and a Y/M/D breakdown — or add and subtract days from a date.
Processed locally in your browser — nothing is uploaded.
Pick both dates to see the difference.
About Date Difference Calculator
Two dates in, every useful count out: total days, a calendar-aware years/months/days breakdown, weeks, and a weekdays-only count that skips Saturdays and Sundays. A second mode goes the other way — start from a date and add or subtract a number of days to find the resulting date and its weekday.
Common uses
- Count days until a deadline or event
- Estimate business days for shipping or contract terms
- Find what date lands 90 days after a signing date
- Measure how long a project actually ran
Example
Input
2026-08-29 → 2026-12-25
Output
118 days · 0y 3m 26d · 85 weekdays
Limitations
- The weekday count excludes weekends but knows nothing about public holidays.