Time and date calculators handle the arithmetic of calendars and clocks — counting days between two dates, figuring out what day of the week a date falls on, calculating your exact age, converting military time, totaling hours worked across a week, and scheduling across time zones.
The most-used tools here are the Age Calculator, the Days Between Dates calculator, and the Hours Calculator. All tools are free with no account required.
Age & Date Difference
Exact age in years, months, and days
Date CalculatorAdd or subtract days from a date
Days Between DatesCount days between two dates
Days CalculatorDays between two dates
Date to Date CalculatorDays, weeks, months between dates
Date Time CalculatorDate difference in any unit
Day CounterCount days from today
Work Hours & Time
Hours between two times
Time CalculatorAdd and subtract time
Work Hours CalculatorWeekly work hours total
Timecard CalculatorWeekly work hours & pay
Time Card CalculatorWeekly hours and overtime pay
Time Clock CalculatorClock in/out time tracking with breaks
Time Duration CalculatorTotal hours across multiple shifts
Countdowns & Conversion