About Date & Time Tools
Our date and time tools help you work with dates precisely and efficiently — whether you need to count down to an event, check what day a date falls on, calculate working days for a deadline, or determine if a year is a leap year.
Date Calculators
- Age Calculator: Calculate exact age from date of birth in years, months, and days
- Date Calculator: Add/subtract time periods and find date differences
- Days Until Calculator: Live countdown to Christmas, New Year, birthdays, and any custom date
- Business Days Calculator: Count weekdays between dates or find a date N business days away
- Day of Week Calculator: Instantly find what weekday any date falls on
- Week Number Calculator: Look up ISO week numbers and view the full year week calendar
- Leap Year Calculator: Check if any year is a leap year and learn the formula
Timers & Clocks
- Pomodoro Timer: Boost productivity with timed work sessions and breaks
- Countdown Timer: Count down from any duration with alarm notifications
- Stopwatch: Count up with centisecond precision and lap time recording
- Time Zone Converter: Convert datetimes between 20 major world time zones
- World Clock: Live current time in 15 major global cities