Quick answer: minutes = hours x 60. 2.75 hours is 165 minutes; 2:45 (2 hours 45 minutes) is also 165 minutes. Going back, divide by 60: 100 minutes is 1 hour 40 minutes, or 1.67 hours.
Decimal hours vs hours:minutes
2.5 hours and 2:30 are the same length, but 2.30 hours is only 2 hours 18 minutes. Payroll uses decimals, clocks use hours:minutes; the time to decimal chart lists every minute.
For payroll decimals such as 0.25 or 0.33, the time to decimal chart lists every minute.
Hours to minutes table
| Decimal hours | Hours:minutes | Minutes |
|---|---|---|
| 0.1 h | 0:06 | 6 |
| 0.25 h | 0:15 | 15 |
| 0.5 h | 0:30 | 30 |
| 0.75 h | 0:45 | 45 |
| 1 h | 1:00 | 60 |
| 1.25 h | 1:15 | 75 |
| 1.5 h | 1:30 | 90 |
| 1.75 h | 1:45 | 105 |
| 2 h | 2:00 | 120 |
| 2.5 h | 2:30 | 150 |
| 3 h | 3:00 | 180 |
| 3.5 h | 3:30 | 210 |
| 4 h | 4:00 | 240 |
| 4.5 h | 4:30 | 270 |
| 5 h | 5:00 | 300 |
| 6 h | 6:00 | 360 |
| 7 h | 7:00 | 420 |
| 7.5 h | 7:30 | 450 |
| 8 h | 8:00 | 480 |
| 8.5 h | 8:30 | 510 |
| 9 h | 9:00 | 540 |
| 10 h | 10:00 | 600 |
| 12 h | 12:00 | 720 |
Formula and examples checked . Found a problem? Tell us.
Questions
How many minutes is 1.5 hours?
90 minutes.
How many minutes is 0.25 hours?
15 minutes.