📅 Date & Time Calculators
Count the days, hours and working days between two dates, add or subtract time, and work out ages and deadlines. These calculators treat dates as calendar dates rather than timestamps, so a result never shifts by a day because of your timezone.
Count calendar days to or since a target, with weeks, inclusive endpoints, and a calendar duration.
Open calculator →Count Monday–Friday business days or shift a date while excluding your own observed holidays.
Open calculator →Add or subtract a days-hours-minutes-seconds duration from a 24-hour time and track day rollover.
Open calculator →Find your exact age in years, months and days — plus total weeks, days and hours.
Open calculator →Count the exact time between two dates in years, months, days, weeks and hours.
Open calculator →Add up hours worked between a start and end time, minus breaks — with overnight shifts and optional pay.
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