Time Duration Calculator
Calculate the hours and minutes between two times, or add and subtract time. Great for timesheets — optionally multiply by an hourly rate for pay.
Duration
8h 0m
Decimal Hours
8.00
480 total minutes
Frequently Asked Questions
How do I calculate hours between two times?
Subtract the start time from the end time in minutes, then convert to hours and minutes. If the end time is earlier than the start (e.g. night shift crossing midnight), add 1440 minutes (24 hours) to get the correct positive duration.
How do I add hours and minutes to a time?
Convert the start time to total minutes since midnight, add the hours and minutes you want, then take the result modulo 1440 (minutes in a day) to get the new clock time. If the result exceeds midnight, the time wraps to the next day.
How do I total my work hours for a timesheet?
Enter your start and end time for each shift, subtract any unpaid break time, and sum the resulting hours. This calculator handles overnight shifts automatically and lets you enter a break duration so you get the net paid hours in one step.