Department № 04

Date.

Ages, durations, and countdowns.

8 tools in this department

Date and time calculators for the everyday scheduling questions that come up at work and at home: age between two dates, days between events, adding or subtracting durations, countdowns to a deadline, and workday math that skips weekends. Useful when planning a project, verifying a legal deadline, tracking a pregnancy, or answering “how long until…?” without pulling up a calendar.

01
Age Calculator
Exact age in years, months, and days between two dates.
02
Date Difference
Days, weeks, months, and years between two dates.
03
Add or Subtract Days
Find the date N days, weeks, months, or years from any date.
04
Time Duration
Duration between two times of day, in hours and minutes.
05
Countdown
Days remaining until a target date.
06
Time Zone Converter
Convert a time between two UTC offsets and see whether the date shifts.
07
Day of the Week Calculator
Weekday, ISO week number, day of the year, and days remaining for any date.
08
Business Days Calculator
Business days (Mon–Fri) between two dates, plus weekends and total weeks.

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