How this conversion works
Keep the 3 whole hours. Convert the minutes on their own: 30 ÷ 60 = 0.50. Add that fraction to the hours: 3 + 0.50 = 3.50.
Write 3.50 on the timesheet. Do not write 3.30. Putting the minutes after the dot is the usual mix-up, and it short-changes the time. 30 minutes is 0.50 of an hour, so 3 hours 30 minutes is 3.50, not 3.30.
Nearby hours and minutes
| Hours and minutes | Decimal hours |
|---|---|
| 3 hours | 3.00 |
| 3 hours 15 minutes | 3.25 |
| 3 hours 30 minutes | 3.50 |
| 3 hours 45 minutes | 3.75 |
| 4 hours | 4.00 |
Nearby pages and the parent tool
- Decimal Hours Calculator (Parent tool)
- Time Conversion Chart (All conversions)
- 1 hour 30 minutes (Nearby)
- 1 hour 45 minutes (Nearby)
- 2 hours 30 minutes (Nearby)
- 2 hours 45 minutes (Nearby)
- 3 hours 45 minutes (Nearby)
- 4 hours 15 minutes (Nearby)
- 4 hours 30 minutes (Nearby)
- 4 hours 45 minutes (Nearby)
Frequently Asked Questions
+What is 3 hours and 30 minutes as a decimal?
3 hours and 30 minutes as a decimal is 3.50.
+How do you convert 3 hours and 30 minutes to decimal hours?
Divide the minutes by 60 and add the hours. 30 ÷ 60 = 0.50, and 3 + 0.50 = 3.50.