Time math
Add, subtract, compare and average hours and minutes.
Work hours and schedules
Totals for shifts, pay periods and working days.
Clock formats
Switch between 12-hour, 24-hour and decimal hours.
Start with what you have and what you want. If you have two clock times and want the gap between them, use the duration calculator. If you have a list of durations to add up, use the hours calculator or the time calculator. To find the time a given number of hours or minutes from now, use time from now, and to find a typical time across several entries, use the average time calculator.
Work-hours questions have their own tools. The time card calculator totals a week of start and end times, the biweekly timesheet covers two weeks, and the clock-out calculator tells you when a shift ends after a set number of hours and any break. The business days calculator skips weekends. For formats, the 24-hour converter and chart handle clock notation, and the decimal converter turns 7:45 into 7.75. The results are arithmetic only.