Time
Date Calculator
🔒 在瀏覽器中執行
Calculate the number of days between two dates, add or subtract days, weeks, months, or years from a date. Fast and free.
如何使用此工具
- Choose to find the gap between two dates, or to add/subtract from one date.
- Enter the date(s) and any number of days, weeks, months, or years.
- Read the resulting date or the difference between the two dates.
Total days
30
Weeks
4w 2d
4 weeks and 2 days
Approx months
0mo
0 months and 30 days
Calendar breakdown
0y 1m 0d
0 yr, 1 mo, 0 days
Working days (Mon–Fri)
20
Weekend days
10
常見問題
- What can it calculate?
- Two things: the number of days (and weeks/months/years) between two dates, or a new date after you add or subtract days, weeks, months, or years from a starting date.
- How does adding months handle month lengths?
- It uses calendar arithmetic, so adding 1 month to 31 January lands on the end of February rather than overflowing into March. Adding days instead avoids that ambiguity.
- Does it handle leap years?
- Yes. Differences and date shifts use real calendar dates, so 29 February and leap days are counted correctly.
- Are my dates uploaded?
- No. The result is computed from the dates you pick using the browser's built-in date functions, so nothing leaves the tab.