When to use this calculator
Use this page when you want a pure time difference between two points on the clock. It is useful for checking a daytime gap, an overnight gap, or the duration of an appointment, travel window, or simple shift span when you do not need break subtraction or payroll logic.
Example: 9:00 AM to 1:30 PM gives a daytime gap of 4h 30m. Example: 10:15 PM to 6:45 AM gives an overnight gap of 8h 30m. Example: 2:00 PM to 3:20 PM gives an appointment duration of 1h 20m.
How to calculate hours worked between two times
- Enter the start time.
- Enter the end time.
- Click Calculate difference to total the gap between the two times.
- Check the result in hours and minutes as well as decimal hours.
- Use Reset if you want to try another time range.
Example of calculating hours worked between times
Example: A time range from 10:15 PM to 6:45 AM results in 8h 30m.
On this work hours calculator, that same result is also shown as 8.50 decimal work hours, which is useful when you need a quick timesheet-style total.
How this time difference calculation works
The calculator converts both times into minutes so the difference can be measured accurately. If the end time is earlier than the start time, it treats the result as an overnight calculation into the next day. This page does not apply break subtraction, and the final difference is converted into both hours and minutes and decimal hours so you can calculate hours worked more clearly.