Date & Time

Date differences, business days, ages, durations, time cards, time zones, countdowns, military time and decimal hours.

12 tools

Date Difference CalculatorCount the days, weeks, months and years between two dates.
Add or Subtract DaysAdd or subtract days, weeks, months or years from a date.
Business Days CalculatorCount working days (Monday to Friday) between two dates.
Day of the Week CalculatorFind the weekday, day of the year and ISO week number for any date.
Time Duration CalculatorFind the time between a start and an end time, minus any break.
Time Card CalculatorAdd up a week of start and end times, minus breaks, into total hours and pay.
Age CalculatorCalculate exact age in years, months and days, plus the days until the next birthday.
Time Zone ConverterConvert a date and time from one time zone to major cities around the world, with daylight saving handled.
Countdown to a DateCount the days, hours, minutes and seconds from now until any date and time.
Military Time ConverterConvert between 12-hour (AM/PM) time and 24-hour military time.
Decimal Hours ConverterConvert decimal hours to hours and minutes (7.75 → 7:45), or hours and minutes to decimal hours.
Add or Subtract Time CalculatorAdd or subtract hours and minutes from a clock time, or total up a list of durations.