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Calculators/Date & time

Date & time calculators

Ages, durations, working days, deadlines and timesheets, worked out on real calendar arithmetic including leap years and weekends.

Age calculatorExact age in years, months and days, plus the next birthday.Days between datesElapsed time between two dates, with and without weekends.Add or subtract from a dateThe date a set number of days, weeks or months away.Working daysCounts weekdays between two dates, less any holidays.Time duration arithmeticAdds and subtracts hours, minutes and seconds.Timesheet & payHours worked in a shift and what they are worth.Day of the week & week numberWhich weekday a date falls on, plus ISO week and day of year.Countdown to a dateTime remaining until a deadline or event.Unix timestamp converterEpoch seconds to a readable date and back.Months from todayThe date a set number of months before or after any starting date.Weeks CalculatorThe date a chosen number of weeks from today or before today, from any starting date.Days until New YearA countdown to the next 1 January, worked out from any starting date.Fortnights Remaining CalculatorHow many fortnights (14-day periods) are left between any two dates, worked out live from today.Date X Months Ago CalculatorThe calendar date a chosen number of months before or after a given date, handling month-end edge cases correctly.Years Ago CalculatorThe calendar date a chosen number of years before or after a given date, handling 29 February correctly.Minutes From Now CalculatorAdds a chosen number of hours and minutes to the current time to show what time it will be.Hours Until a Weekday CalculatorHours and days until the next occurrence of a chosen day of the week starts.Weeks in the Year So Far CalculatorWhole weeks that have elapsed since 1 January, for today or any reference date you choose.Pregnancy countdownDays, weeks and percentage remaining until a due date, from the due date itself or the last period.BC and AD Timeline CalculatorYears elapsed between a BC (BCE) year and an AD (CE) year, correctly accounting for there being no year zero.Days from today calculatorThe date a chosen number of days from now, or before now.How old am IYour exact age in years, months and days, worked out from your date of birth.Time Until a Clock TimeTime remaining until a target time today, such as 3:15 pm, counted from the current time.Weeks left in the yearHow many weeks remain until 31 December, worked out from today or any reference date you choose.