How to use the time difference calculator
- Enter start time and end time.
- Read duration in hours and minutes, plus total minutes for payroll or billing.
- Copy link to share the times.
Example: 9:30 AM to 5:45 PM
Same-day shift: 8 hours 15 minutes (495 minutes). Useful for work hours, study blocks, or event schedules. If you enter 10:00 PM to 6:00 AM, the tool treats the end as the next morning and shows an overnight span.
Time difference vs. date difference
This page is for clock times within a day or overnight. To measure whole calendar days between two dates (projects, leases, age), use the date difference calculator. To combine date and time across time zones, use the time zone converter.
Frequently asked questions
How many hours between two times?
Enter start and end times—the results panel shows hours, minutes, and total minutes.
How long from 9 AM to 5 PM?
Try start 9:00 and end 17:00 (or 17:45) using the in-app sample.
What if end time is before start time (night shift)?
End is treated as the next calendar day, e.g. 10:00 PM → 6:00 AM = 8 hours.
Are seconds included?
Times are to the minute; seconds are not used.
How is this different from date difference?
This page is clock duration on one calendar day (or overnight); date difference counts calendar days between two dates.
How is this different from time zone converter?
Time difference = span between two times; time zone converter = same instant in another city.
How do I calculate work hours?
Enter clock-in and clock-out; lunch breaks depend on your employer’s rules.
How do total minutes relate to hours?
Both are shown—hours + minutes and total minutes.
Can I share my times?
Copy link in the results panel saves both times.