Date & time calculators
Ages, countdowns, workdays and time cards. 14 in this section.
- Age CalculatorExact age in years, months and days, plus total days lived and the countdown to your next birthday.
- Date Difference CalculatorDays between two dates, with a weeks, months and years breakdown and an option to count the end date.
- Add Days to a Date CalculatorAdd or subtract days, weeks, months or years from any date to find the resulting date.
- Business Days CalculatorCount working days between two dates, excluding weekends and, optionally, US federal holidays.
- Time Duration CalculatorHours and minutes between two clock times, including shifts that cross midnight.
- Time Card CalculatorWeekly timesheet with in, out and break times for 7 days, overtime over 40 hours and gross pay.
- Day of the Week CalculatorFind which day of the week any date falls on, past or future.
- Week Number CalculatorISO 8601 week number for any date, with the week's Monday-to-Sunday date range.
- Countdown CalculatorDays, weeks and months until a holiday or any date you choose.
- Unix Timestamp ConverterConvert a Unix epoch timestamp to a readable date, or a date and time to a Unix timestamp.
- Time Zone ConverterConvert a date and time between world time zones, with daylight saving time handled automatically.
- Military Time ConverterConvert between 24-hour military time and 12-hour AM/PM time in either direction.
- Decimal Hours CalculatorConvert hours and minutes to decimal hours for payroll, or decimal hours back to hours and minutes.
- Time CalculatorAdd or subtract hours and minutes from a clock time to find the resulting time and day.