Time and Date Calculators
Each calculator does one job and shows its working. Pick the one that matches what you have, and what you want to find.
- Hours CalculatorUse this when you have a start time, an end time and an unpaid break, and want hours as h:mm and decimal hours.
- Time Duration CalculatorUse this when you have two date-times that may be days apart and want days, hours, minutes and seconds, or want to add or subtract a duration.
- Working Days CalculatorUse this when you have two dates and want the number of working days between them, with or without weekends and US federal holidays.
- Business Days From Today CalculatorUse this when you know a number of business days and want the date it lands on, from today or any start date.
- Date Difference CalculatorUse this when you have two calendar dates and want the gap as years, months and days, or as total days and weeks.
Not sure which to use?
Times within a day, such as a shift with a break, go in the hours calculator. For a gap between two moments that may be days apart, use time duration. For calendar dates, use date difference for years, months and days, and working days to count only weekdays. Business days from today goes the other way, from a count to a date.
These work with calendar dates and clock times only, so daylight saving and time zones are not applied. Results are estimates; see the methodology.