Counting the time between two clock times is simple until you cross midnight or take a break. Here's the method and a worked example.
How to count time between two times
- Write both times in 24-hour form: 5:30 PM is 17:30.
- If the end is earlier than the start, add 24 hours to the end.
- Subtract, borrowing 60 minutes if the minutes go negative.
- Take off any unpaid break.
Example: Night shift, 10:00 PM to 6:15 AM, 30-minute break
06:15 + 24:00 = 30:15. 30:15 − 22:00 = 8 hours 15 minutes.
Less the break: 7 hours 45 minutes, or 7.75 decimal hours.
For a whole week of shifts with overtime, use the time card calculator.
How to use this calculator
- Enter the start and end times.
- Add a break to subtract, if any.
- Add extra days if the end is more than a day later.
FAQs
How do I work out hours between two times?
Subtract the start from the end. If the minutes go negative, borrow an hour: 5:15 − 1:40 is 4:75 − 1:40 = 3 hours 35 minutes.
What about times that cross midnight?
Add 24 hours to the end time. 22:00 to 06:00 is (6 + 24) − 22 = 8 hours.
How many minutes are in 8.5 hours?
510 minutes: 8 × 60 + 30.
Results are estimates and aren't financial advice. For decisions about your own money, check with a qualified adviser. Spotted a mistake? Tell us.