How to convert 30 minutes to decimal
Decimal hours = minutes ÷ 60, so 30 ÷ 60 = 0.5.
Going back: 0.50 × 60 = 30 minutes. Any whole number of hours plus 30 minutes ends in .50: 1:30 = 1.50, 7:30 = 7.50, 8:30 = 8.50.
Payroll example
You work 8 hours 30 minutes at $22.75 an hour.
- Convert the time: 8 + 30 ÷ 60 = 8 + 0.50 = 8.50 hours.
- Multiply by the rate: 8.50 × $22.75 = $193.38.
Typing 8:30 as 8.30 would pay $188.83 instead: $4.55 too little. Add up a whole week of clock times with the time card calculator.
Minutes near 30 in decimal
| Minutes | Decimal hours | Exact |
|---|---|---|
| 27 | 0.45 | 0.45 |
| 28 | 0.47 | 0.4666… |
| 29 | 0.48 | 0.4833… |
| 30 | 0.50 | 0.5 |
| 31 | 0.52 | 0.5166… |
| 32 | 0.53 | 0.5333… |
| 33 | 0.55 | 0.55 |
See every value from 1 to 59 in the full minutes to decimal chart (printable).
Frequently asked questions
How do I write 30 minutes on a timesheet?
If the timesheet asks for decimal hours, write 0.50. If it asks for hours and minutes, write 0:30. For 8 hours 30 minutes, that is 8.50 in decimal or 8:30 in hours and minutes.
How many minutes is 0.50 hours?
0.50 hours is exactly 30 minutes: 0.50 × 60 = 30.