Add up work hours from clock times

The job

Two recurring needs: the elapsed time between a start and end time — a shift, a meeting, a flight — and the total of several duration entries, like a week of daily hours.

Elapsed mode and overnight

Enter start and end as 24-hour HH:MM. If the end is earlier than the start, enable “end is next day” — a 22:00 to 6:00 shift is 8 hours, not an error. Seconds are accepted and rounded to the minute.

Sum mode for timesheets

Paste daily entries like “7:45”, “8:10”, “6:55”, one per line, and the total comes back as hours:minutes — usable directly on a timesheet. Lines can exceed 24 hours; a total like 41:35 stays in hours rather than wrapping into days.

• To exclude a break, subtract it first: elapsed minus break, then put the net on the sum list.
• The tool does clock arithmetic only — it does not know dates or holidays. For calendar spans use the date-duration tool.