Time Duration Calculator
Drop in two clock times and we'll show the elapsed hours, minutes and seconds.
Inputs
If the end time is earlier than the start, we'll wrap to the next day.
Result
Duration
8h 30m
8.50 hours total
Next useful calculators
Visual breakdown
Hours
8.5
Minutes
510
Seconds
30,600
Days
0.354
09:0017:30
Elapsed · 8h 30m 510
Formula
Duration = end − start. If end < start, add 24 hours.
Example
09:00 → 17:30 = 8h 30m (8.50 hours).
Common examples
9:15 → 17:45
8h 30m elapsed.
22:00 → 06:00 next day
Overnight shift = 8h.
Workout 18:30 → 19:12
= 42 min.
Frequently asked
Does it handle shifts that end after midnight?
Yes — set the end date to the next day, or leave both dates the same and we'll wrap automatically.
Does it subtract breaks?
Not here — for breaks use the Hours Calculator or Work Hours Calculator.
Can I get the result in decimal hours?
Yes — the totals card shows decimal hours, useful for billing or timesheets.