315 minutes 0 seconds
There are 60 minutes in one hour, so multiply the number of hours by 60.
| 4 hours to minutes | 240 minutes |
| 4.25 hours to minutes | 255 minutes |
| 4.5 hours to minutes | 270 minutes |
| 4.75 hours to minutes | 285 minutes |
| 5 hours to minutes | 300 minutes |
| 5.5 hours to minutes | 330 minutes |
| 5.75 hours to minutes | 345 minutes |
| 6 hours to minutes | 360 minutes |
| 6.25 hours to minutes | 375 minutes |
| 6.5 hours to minutes | 390 minutes |
5.25 hours equals 315 minutes. Because each hour holds 60 minutes, 5.25 × 60 = 315.
The rule is minutes = hours × 60. Applying it to 5.25 hours gives 5.25 × 60 = 315 minutes.
In seconds, 5.25 hours comes to 18900 seconds — that is 5.25 × 3600, or 315 minutes 0 seconds.
Need to track a full shift? Use the Hours Worked Calculator to add up work time, breaks, and pay.