How to convert 31 minutes to decimal
Decimal hours = minutes ÷ 60, so 31 ÷ 60 = 0.5166…, which rounds to 0.52.
Going back: 0.52 × 60 = 31.2 minutes, which rounds to 31 minutes. Any whole number of hours plus 31 minutes ends in .52: 1:31 = 1.52, 7:31 = 7.52, 8:31 = 8.52.
Payroll example
You work 4 hours 31 minutes at $24.00 an hour.
- Convert the time: 4 + 31 ÷ 60 = 4 + 0.52 = 4.52 hours.
- Multiply by the rate: 4.52 × $24.00 = $108.48.
Paying on the exact time (4 hours 31 minutes × $24.00) gives $108.40. The $0.08 difference comes from rounding 4.5166… to 4.52.
Typing 4:31 as 4.31 would pay $103.44 instead: $5.04 too little. Add up a whole week of clock times with the time card calculator.
Minutes near 31 in decimal
| Minutes | Decimal hours | Exact |
|---|---|---|
| 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 |
| 34 | 0.57 | 0.5666… |
See every value from 1 to 59 in the full minutes to decimal chart (printable).
Frequently asked questions
How do I write 31 minutes on a timesheet?
If the timesheet asks for decimal hours, write 0.52. If it asks for hours and minutes, write 0:31. For 4 hours 31 minutes, that is 4.52 in decimal or 4:31 in hours and minutes.
How many minutes is 0.52 hours?
0.52 × 60 = 31.2 minutes, which rounds to 31 minutes. The small difference comes from rounding 0.5166… to 0.52.