510 minutes 0 seconds
There are 60 minutes in one hour, so multiply the number of hours by 60.
| 7.25 hours to minutes | 435 minutes |
| 7.5 hours to minutes | 450 minutes |
| 7.75 hours to minutes | 465 minutes |
| 8 hours to minutes | 480 minutes |
| 8.25 hours to minutes | 495 minutes |
| 8.75 hours to minutes | 525 minutes |
| 9 hours to minutes | 540 minutes |
| 9.25 hours to minutes | 555 minutes |
| 9.5 hours to minutes | 570 minutes |
| 9.75 hours to minutes | 585 minutes |
There are 510 minutes in 8.5 hours — multiply 8.5 by 60, the number of minutes in an hour.
To convert decimal hours to minutes, multiply the hours by 60, because one hour has 60 minutes. For 8.5 hours: 8.5 × 60 = 510 minutes.
8.5 hours contains 30600 seconds (8.5 × 3600), i.e. 510 minutes 0 seconds.
Converting 8.5 hours (510 minutes) is common on timesheets and payroll, where worked time is often recorded in decimal hours and needs to be expressed in minutes.
Need to track a full shift? Use the Hours Worked Calculator to add up work time, breaks, and pay.
Or convert the other way: 510 minutes to hours.