Time Calculator
Find the hours and minutes between two times, calculate work hours after breaks, or add and subtract time across midnight.
Time between two times
Leave the break at 0 to find the elapsed time. Enter a break to calculate net work hours. An earlier end time automatically crosses midnight; select next day for a full 24-hour interval.
Add or subtract time
Use negative hours or minutes to subtract. For example, 2:00 PM + 90 minutes = 3:30 PM (15:30).
How to use the time calculator
Choose Duration / work to find the time between a start and end clock time. Keep the optional break at 0 for the full elapsed duration, or subtract a break for net working hours. Choose Add / subtract to find a clock time a certain number of hours or minutes later or earlier.
Results include hours and minutes, total minutes or decimal hours where applicable, plus the calculation formula. Times that pass midnight are handled automatically.
Hours between two times
From 9:00 AM to 6:00 PM is 9 hours, or 540 minutes. Subtract a 60-minute break to get 8 hours of work. Decimal hours make the result easier to use in a timesheet.
Add or subtract minutes
What is 90 minutes from 2:00 PM? Enter 14:00 and 90 minutes in Add / subtract to get 15:30 (3:30 PM). To go backwards, enter a negative duration.
Overnight time differences
From 10:00 PM to 6:00 AM is 8 hours across midnight. When the end time is earlier than the start, it is treated as the following day.
Time Calculator FAQ
How do I calculate hours between two times?
Enter the start time and end time under Duration / work. The calculator converts both to minutes, subtracts the start from the end, and displays hours, minutes and decimal hours. Keep the optional break at zero for the full elapsed time.
How many minutes are there from 2:00 PM to 3:30 PM?
There are 90 minutes, or 1 hour 30 minutes, between 2:00 PM and 3:30 PM.
How do I subtract 30 minutes from a time?
Select Add / subtract, enter the starting clock time and -30 in the Minutes field, then select Calculate.
How does the calculator handle a shift past midnight?
When the ending clock time is earlier than the starting time, the calculator treats the end as occurring the next day. You can also select End on the next day for a 24-hour interval or an end time later on the following day.
What is the difference between hours and decimal hours?
Hours and minutes use 60 minutes per hour. Decimal hours use a fraction of an hour: 7 hours 30 minutes is 7.5 decimal hours, not 7.30.
Can I calculate the time between two dates?
This tool measures the difference between clock times, including overnight spans. For differences between calendar dates, use the Date Calculator.