Add and subtract a list of durations
Paste signed durations to get an exact total, including totals longer than 24 hours.
Preparing your tool…
How it works
Convert each HH:MM:SS duration to integer milliseconds before summing.
Example
01:30:00 plus 02:15:00 minus 00:45:00 totals 03:00:00.
What should I check before using the result?
Up to 100 entries; these are durations, not clock times.