Work Hours Calculator
Enter your work intervals and breaks. Get hours and minutes plus decimal hours without converting each entry yourself.
Overnight entries belong entirely to their start date. Clock-time minutes, without time-zone or daylight-saving adjustments.
Enter start and end times, then calculate hours.
Total hours
- Decimal hours
- Total minutes
Select this text to copy manually. Clearing this page does not erase the system clipboard.
How to use and calculation rules
Enter a start date, start and end times, and break minutes for each entry. Select “Ends next day” for overnight work, then “Calculate hours.” Start dates range from 2000 to 2099, with up to 62 entries of at most 24 hours each. Adjacent entries are allowed; correct any overlaps first.
How are overnight entries calculated?
Select “Ends next day.” For example, 22:00 to 02:00 the next day is 4 hours, or 3 hours 30 minutes after a 30-minute break. The entire entry belongs to its start date, without splitting it between days.
Why is there no total for overlapping entries?
Overlaps are rejected to avoid counting time twice. Break totals do not specify a break interval, so they cannot remove an overlap. Adjacent entries such as 09:00–12:00 and 12:00–13:00 are allowed.
Does 7.50 mean 7 hours 50 minutes?
No. 7.50 decimal hours equals 7 hours 30 minutes. Both formats are shown. All minutes are added first, then decimal hours are rounded to two places.
Are pay or daylight-saving rules included?
This totals entered clock times without time-zone or daylight-saving adjustments. It does not determine pay, overtime or legal attendance rules.
Are my entries saved?
Entries stay in this page’s memory, without saving or uploading work content. Leaving clears them. Copying requires your action; the page does not read the clipboard. Loading the page still connects to the hosting service.