The formula
Decimal hours = hours + (minutes ÷ 60)
So 7 hours 45 minutes is 7 + (45 ÷ 60) = 7 + 0.75 = 7.75 hours.
Common conversions
| Hours : minutes | Decimal hours |
|---|---|
| 0:15 | 0.25 |
| 0:30 | 0.50 |
| 0:45 | 0.75 |
| 7:20 | 7.33 |
| 7:45 | 7.75 |
| 8:10 | 8.17 |
| 38:50 | 38.83 |
Minutes to decimal chart
| Minutes | Decimal |
|---|---|
| 0 min | 0.00 |
| 1 min | 0.02 |
| 2 min | 0.03 |
| 3 min | 0.05 |
| 4 min | 0.07 |
| 5 min | 0.08 |
| 6 min | 0.10 |
| 7 min | 0.12 |
| 8 min | 0.13 |
| 9 min | 0.15 |
| 10 min | 0.17 |
| 11 min | 0.18 |
| 12 min | 0.20 |
| 13 min | 0.22 |
| 14 min | 0.23 |
| 15 min | 0.25 |
| 16 min | 0.27 |
| 17 min | 0.28 |
| 18 min | 0.30 |
| 19 min | 0.32 |
| Minutes | Decimal |
|---|---|
| 20 min | 0.33 |
| 21 min | 0.35 |
| 22 min | 0.37 |
| 23 min | 0.38 |
| 24 min | 0.40 |
| 25 min | 0.42 |
| 26 min | 0.43 |
| 27 min | 0.45 |
| 28 min | 0.47 |
| 29 min | 0.48 |
| 30 min | 0.50 |
| 31 min | 0.52 |
| 32 min | 0.53 |
| 33 min | 0.55 |
| 34 min | 0.57 |
| 35 min | 0.58 |
| 36 min | 0.60 |
| 37 min | 0.62 |
| 38 min | 0.63 |
| 39 min | 0.65 |
| Minutes | Decimal |
|---|---|
| 40 min | 0.67 |
| 41 min | 0.68 |
| 42 min | 0.70 |
| 43 min | 0.72 |
| 44 min | 0.73 |
| 45 min | 0.75 |
| 46 min | 0.77 |
| 47 min | 0.78 |
| 48 min | 0.80 |
| 49 min | 0.82 |
| 50 min | 0.83 |
| 51 min | 0.85 |
| 52 min | 0.87 |
| 53 min | 0.88 |
| 54 min | 0.90 |
| 55 min | 0.92 |
| 56 min | 0.93 |
| 57 min | 0.95 |
| 58 min | 0.97 |
| 59 min | 0.98 |
Decimal hours back to minutes
Multiply the decimal part by 60. 8.35 hours is 8 hours and 0.35 × 60 = 21 minutes, so 8:21.
A common mistake
7:30 is not 7.30 hours. It is 7.50. Typing 7.30 into payroll underpays 12 minutes every time.
Rounding time
Many time clocks round punches to the nearest 5, 6 (one tenth of an hour) or 15 minutes. Under the federal rule, rounding is allowed only if it averages out over time and does not end up underpaying people. Calculating from exact minutes, as this calculator does, avoids the problem.
Source: US DOL Fact Sheet #22: Hours Worked
Questions
What is 45 minutes as a decimal?
45 minutes is 0.75 hours (45 ÷ 60).
What is 20 minutes in decimal hours?
20 minutes is 0.33 hours (20 ÷ 60 = 0.333, rounded to two decimals).
How do I convert 8 hours 15 minutes to decimal?
8 hours 15 minutes is 8 + (15 ÷ 60) = 8.25 hours.