Add or subtract lengths of time entered as hours, minutes and seconds, and get a clean total in HH:MM:SS. It is the tool for stacking up durations rather than clock times: adding lap times, summing task lengths, working out total run time across several clips, or subtracting a break from a shift. Choose whether each row adds to or removes from the running total, and the calculator carries seconds into minutes and minutes into hours automatically so you never have to borrow by hand. It also shows the result as decimal hours, which is exactly what you need for timesheets and billing. Enter your values, pick add or subtract, and see the total instantly. Everything is computed in your browser with no accounts and no data leaving your device.
Yes. You can combine multiple hours, minutes and seconds entries and it returns the running total.
The total is shown both as HH:MM:SS and as decimal hours, which is handy for pay or logging.
Yes. The tool supports adding and subtracting durations to find the net time.
Add or subtract lengths of time entered as hours, minutes and seconds, and get a clean total in HH:MM:SS. It is the tool for stacking up durations rather than clock times: adding lap times, summing task lengths, working out total run time across several clips, or subtracting a break from a shift.
Yes. Time Duration Calculator is completely free, with no sign-up and no usage limits.
Yes. Time Duration Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Time Duration Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.