Elapsed time
calculator
Find the interval between two 24-hour times
with an explicit day choice.
Calculate a clock interval
Same day · exact position on a 24-hour clock axis
Clock arithmetic only. No date, time zone, daylight-saving adjustment or break deduction.
An earlier end time needs Next day selected; it is never assumed automatically.
How it works
Enter both
clock times
Choose
the end day
Read
elapsed time
Overnight example
22:30 to 06:15 · Next day selected
90 + 375 = 465 minutes = 7h 45m
Questions, Answered.
Why must I choose Same day or Next day?
The choice states the end day explicitly. An earlier end on the same day is invalid. Next day adds exactly one nominal calendar day; it does not choose the shortest span automatically.
What if the start and end times match?
Same day gives zero minutes. Next day gives 1440 nominal minutes, or 24 hours.
Does this account for daylight-saving changes?
No. This is wall-clock arithmetic without dates, time zones or daylight-saving changes. A real dated interval across a clock change can differ.