Time Calculator
Need to add up work shifts, exercise sessions, or cooking times? This time calculator lets you add or subtract two time durations in hours, minutes, and seconds, and gives you the result in multiple formats.
The time calculator converts both time values into seconds, performs the addition or subtraction, and then converts back into hours, minutes, and seconds. This avoids common pitfalls with base-60 arithmetic.
Common uses include totaling time spent on tasks, calculating elapsed durations, figuring out remaining time on a timer, or combining multiple activity durations into one total. The decimal-minutes output is especially useful for timesheet and payroll calculations where time is tracked in decimal format.
If the subtraction results in a negative value, the calculator displays the magnitude with a negative sign so you can see exactly how much time the second duration exceeds the first.