Time & Date Calculators
Ages, durations, countdowns, and date arithmetic.
Age Calculator
Find your exact age in years, months, and days from any birth date.
Time & DateDate Duration Calculator
Find the exact duration between two dates, in days, weeks, and business days.
Time & DateCountdown Calculator
Find exactly how much time remains until any date and time.
Time & DateAdd or Subtract Days Calculator
Add or subtract days from a date to find the resulting date.
Time & DateTime Zone Converter
Convert a time between UTC offsets for scheduling across zones.
Time & DateTime Difference Calculator
Find the hours and minutes between two clock times.
Time & DateLeap Year Calculator
Check whether a year is a leap year, and find nearby leap years.
Time & DateYears of Service Calculator
Calculate exact tenure and countdown to the next work anniversary.
Time & DateWeek Number Calculator
Find the ISO week number for any date.
Time & DateDay of the Week Calculator
Find what day of the week any date falls on.
Time & DateFuture Age Calculator
Find out how old you'll be on any future date.
Time & DateBusiness Days Calculator
Add business days (weekdays only) to a date.
Time & DateZodiac Sign Calculator
Find your zodiac sign from your birth date.
Time & DateUnix Timestamp Converter
Convert Unix timestamps to dates and back.
Time & DateQuarter Calculator
Find which calendar quarter a date falls in.
Time & DateTime Until Birthday Calculator
Find exactly how many days until your next birthday.
Time & DateAnniversary Calculator
Find how many years together and when your next anniversary is.
Time & DateRetirement Date Calculator
Find the exact date you'll reach your target retirement age.
Time & DateTime Duration Calculator
Calculate the duration between two clock times.
Time & DateSeason Calculator
Find which season a date falls in.
Time & DateDate Format Converter
Convert a date between US, international, and ISO formats.
Time & Date