Time Duration Calculator

Set a start time and an end time. The duration appears at once, shown two ways: as hours and minutes, like 2h 30m, and as decimal hours, like 2.5. You also see the plain count of minutes, which is handy for short spans.

Both fields use a clock picker, so the value is always a valid time and there is nothing to mistype. To total several spans into one figure, or to take off a break, use the hours calculator instead.

When the end time is on or before the start time, the tool reads the span as crossing midnight. So 11:00 PM to 1:30 AM comes out as 2h 30m, not a negative number. You do not need a date or a second setting for the two calendar days.

An end time equal to the start time reads as zero, not a full day. If you want a whole 24-hour block, the two times would need to differ. For gaps measured in days rather than hours, the date calculator counts the days between two dates.

People read time in hours and minutes, but a lot of forms want decimal hours. They mean the same thing. Thirty minutes is half an hour, so 2h 30m is 2.5 hours. Fifteen minutes is a quarter hour, or 0.25.

The tool shows both at once, so you can copy whichever your form needs without doing the division by hand. To turn a shift into pay at an hourly rate, the work hours calculator adds a rate field on top of the duration.

How long was that meeting? How much sleep did you get? How long is the gap between two trains? Any time you have a start, an end, and want the stretch in between, this tool gives a clean answer in seconds.

It is a single-span tool by design, which keeps it fast. For a full week of shifts laid out day by day, the time card calculator totals seven days at once.