Dates and Time Calculators
All Dates and Time Calculators
Birthday Countdown
Days hours minutes until your next birthday
Moon Phase Calculator
Current moon phase and full moon calendar
Week Number Calculator
ISO week number for any calendar date
Time Zone Converter
Convert times between world time zones
Working Days Calculator
Business days between two dates
Leap Year Calculator
Is any year a leap year and when is the next one?
Korean Age Calculator
Your age in the Korean age system
Retirement Date Calculator
Calculate your retirement date by country
Lunar Calendar Calculator
Convert Gregorian dates to lunar calendar
Days Between Dates
Count exact days between any two calendar dates
Add or Subtract Days from Date
Add or subtract days weeks months from any date
Business Days Calculator
Count working days between two dates excluding weekends
Age on a Specific Date
Calculate your age on any past or future date
Date to Day of Week
Find what day of the week any date falls on
Weeks Between Dates
Number of full and partial weeks between two dates
Quarter of Year Calculator
Find what financial quarter any date falls in
Sunrise Sunset Calculator
Sunrise and sunset times for any location and date
Add Days to Date
Calculate a future date by adding days