Date & Time Calculators

Age Calculator

Calculate your exact age in years, months, and days.

Date Difference Calculator

Calculate the number of days, weeks, and months between two dates.

Day of the Week Calculator

Find out what day of the week any date falls on.

Countdown Calculator

Calculate the time remaining until a future date and time.

Time Duration Calculator

Calculate the duration between two clock times in hours and minutes.

Leap Year Checker

Check whether a given year is a leap year.

Week Number Calculator

Find the ISO week number for any date.

Business Days Calculator

Calculate the number of weekdays between two dates, excluding weekends.

Add or Subtract Days Calculator

Calculate the date a given number of days before or after a start date.

Time Zone Difference Calculator

Calculate the time difference between two UTC offsets.

Age in Days Calculator

Calculate exactly how many days old you are.

Fiscal/Calendar Quarter Calculator

Find which calendar quarter a given date falls in.

Zodiac Sign Calculator

Find the Western zodiac sign for any birth date.

Days Until Next Birthday Calculator

Calculate how many days remain until your next birthday.

Season Calculator

Find which meteorological season a given date falls in.

Century Calculator

Find which century a given year belongs to.

Days in Month Calculator

Find how many days are in any given month and year.

Nth Weekday of Month Calculator

Find the date of a specific weekday occurrence in a month, like the 'second Tuesday.'

Days Until Retirement Calculator

Calculate exactly how many days remain until your target retirement date.

Julian Day Number Calculator

Convert a calendar date into its Julian Day Number.

Elapsed Time in Seconds Calculator

Calculate the exact number of seconds between two date/time values.

Overtime Hours Calculator

Calculate how many overtime hours you've worked beyond a standard threshold.

Days Since Epoch Calculator

Calculate how many days a date is from the Unix epoch (January 1, 1970).

Time Until Weekend Calculator

Calculate how many days and hours remain until the weekend.