Date & Time
Age calculation, date differences, countdown timers, and workdays.
23 calculators in Date & Time
Age
Age Calculator
Find the exact age in years, months, and days between two dates.
Cat Age Calculator
Convert your cat's age to human years using the AAFP formula.
Dog Age Calculator
Convert your dog's age to human years accurately.
Korean Age Calculator
Convert between Korean age and international age.
Pregnancy Week Calculator
Calculate your current pregnancy week, trimester, due date, and baby's development milestones.
Difference
Business Days
Countdown
Birthday Countdown Calculator
Count the days until your next birthday and see what day it falls on.
Countdown Timer
Calculate days remaining until a specific date or event.
Day Counter
Count the number of days from or until a specific date.
Retirement Countdown Calculator
Count the days until your retirement date based on your target retirement age.
Time Until Calculator
Calculate exact time remaining until a target date and time.
Calendar
Lucky Day Calculator
Find auspicious days for events.
Japanese Era (Wareki) Converter
Convert between Western years and Japanese era years (令和, 平成, 昭和, 大正, 明治).
Yakudoshi Calculator
Calculate yakudoshi (unlucky years) from birth year.
Leap Year Calculator
Check if a year is a leap year and find the next leap years.
Zodiac Sign Calculator
Find zodiac sign and Chinese zodiac from birthdate.
Zodiac Compatibility Calculator
Check zodiac compatibility between two people by birthday.