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Date & Time Calculators
Free date and time calculators: age, days between dates, add or subtract days, business days, hours and minutes, week numbers and time zones.
Age CalculatorExact age in years, months and days, plus your next birthday.Birthday CalculatorDays to your next birthday, the weekday, and fun milestones.Business Days CalculatorWorking days between two dates, minus holidays.Date Calculator: Add or Subtract DaysAdd or subtract days, weeks, months and years from a date.Day of the Week CalculatorWhat day of the week was — or will be — any date?Day of the Year CalculatorDay number of the year for any date, and days remaining.Days Between Dates CalculatorDays, weeks, months and business days between two dates.Days From Today CalculatorWhat date is N days from today — or N days ago?Days Until CalculatorCountdown in days to Christmas, a holiday or any date.Hours Calculator: Add Up Hours and MinutesTotal a list of durations like 1:30, 2:45 and 50 min.Leap Year CalculatorIs it a leap year? Plus the next and previous ones.Military Time ConverterConvert between 24-hour military time and 12-hour am/pm.Months Between Dates CalculatorWhole months and leftover days between two dates.Time Calculator: Add or Subtract TimeWhat time will it be in X hours and Y minutes?Time Duration CalculatorHours and minutes between two clock times.Time to Decimal CalculatorConvert hours and minutes to decimal hours for payroll.Time Zone ConverterConvert a time between cities, daylight saving included.Unix Timestamp ConverterConvert epoch time to a date, or a date to epoch time.Week Number CalculatorThe ISO week number for any date, with its start and end.Weeks Between Dates CalculatorHow many weeks (and days) between two dates.