Date Tools
Date arithmetic done right. Calculate exact age in years, months, and days using real calendar borrowing — not the rough 30-day-month averaging most calculators use. Counts down to the next birthday or anniversary across leap years and daylight-saving transitions.
10 date tools
Calculate exact age in years, months, days, hours and minutes.
Calculate the exact gap between two dates in years, months, days and total days.
Convert between Unix timestamps and human-readable dates in either direction.
See any moment in multiple time zones at once, with working hours indicators.
Find the duration between two times, or add and subtract hours and minutes.
Add or subtract years, months, weeks and days from a date to find a new date.
Count the working days between two dates, excluding weekends.
Find what day of the week any date falls on.
Check whether a year is a leap year and list nearby leap years.
Find your astrological zodiac sign from your birth date.