How does this calculator work?
Enter start and end times in 24-hour format. If the end time belongs to the following calendar day, enable “Ends next day”. The tool shows total minutes and decimal hours.
Quick example
From 09:15 to 17:45 is 8 hours and 30 minutes, or 8.50 decimal hours.
Frequently asked questions
Can it calculate an overnight shift?
Yes. Enable “Ends next day” when the end time is earlier than the start time.
What about daylight saving time?
This compares clock times, not elapsed instants across different dates or time zones. Overnight durations are treated as 24-hour clock intervals.