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Date & time

Count calendar days, find a weekday or convert durations. National holidays and statutory deadlines are not assumed.

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7 calculators

7 calculators available.

Date & timeDays between datesCalculate calendar days between two dates, with an option to include both endpoints.
Date & timeAdd days to a dateAdd or subtract calendar days and see the resulting date and day of the week.
Date & timeAge calculatorFind completed years of age and elapsed calendar days between a birth date and a reference date.
Date & timeDay of the week calculatorFind the day of the week for a date in the Gregorian calendar.
Date & timeISO week number calculatorFind the ISO week number, its week-year and the Monday of that week.
Date & timeTime duration calculatorCalculate a duration from start and end times. An earlier end time is treated as occurring on the following day.
Date & timeHours and minutes converterConvert hours, minutes and seconds into decimal hours and a total number of minutes or seconds.