Time & Date Calculators
20 free calculators.
Add Days to Date CalculatorAdd a number of days to a date and get the resulting calendar date.Age CalculatorWork out a person's exact age in years, months, and days from a date of birth.Birthday Countdown CalculatorCount the days until the next birthday from a birth month and day.Date Difference CalculatorFind how many days lie between two dates, using real calendar dates.Days Since Date CalculatorFind how many days have passed since a past date.Days Until Date CalculatorCount how many days remain until a future date, including a countdown in days.Hours Between Times CalculatorGet the elapsed time between two clock times as a decimal number of hours.Meeting Time Across Time Zones CalculatorConvert a meeting time from one UTC offset to another, for scheduling across zones.Minutes to Hours CalculatorConvert a number of minutes into hours and minutes.Months to Weeks CalculatorConvert months to weeks approximately, since months vary in length.Overtime Hours CalculatorSplit total hours worked into regular hours and overtime hours.Project Days Remaining CalculatorCount working-day style calendar days left until a project deadline.Seconds to Minutes CalculatorConvert a number of seconds into minutes and seconds.Shift Length CalculatorFind the length of a work shift, including an unpaid break, with overnight shifts handled.Sleep Time CalculatorFind what time to go to bed, given a wake-up time and desired hours of sleep.Subtract Days from Date CalculatorSubtract a number of days from a date and get the resulting calendar date.Time Difference CalculatorFind the difference between two times in hours and minutes.Time Zone Offset CalculatorConvert a time between two time zones using offsets you enter — no live lookup.Weeks to Days CalculatorConvert a number of weeks into days, and see the equivalent in hours too.Working Days Between Dates CalculatorCount Monday-to-Friday working days between two dates, excluding weekends.