Elapsed Time Calculator
Calculate the time difference between two times in hours, minutes, and seconds.
Works with AM/PM and 24-hour formats.
Elapsed Time
Elapsed time is the duration between a start time and an end time.
Method: Convert both times to minutes from midnight, then subtract:
Elapsed Minutes = End Time (in minutes) − Start Time (in minutes)
If the result is negative, add 1,440 (24 hours) for overnight spans.
Converting to hours and minutes:
Hours = floor(Total Minutes / 60)
Remaining Minutes = Total Minutes mod 60
Common uses:
- Calculating work hours (clock in/out)
- Cooking and baking timers
- Exercise duration tracking
- Travel time calculations
- Billing by the hour
Time format conversion:
| 12-Hour | 24-Hour |
|---|---|
| 12:00 AM | 00:00 |
| 8:30 AM | 08:30 |
| 12:00 PM | 12:00 |
| 5:45 PM | 17:45 |
| 11:59 PM | 23:59 |
Decimal hours (for billing):
- 15 min = 0.25 hours
- 30 min = 0.50 hours
- 45 min = 0.75 hours