How to convert minutes to decimal hours
Divide the minutes by 60 and add the result to the hours. 7 hours 45 minutes is 7 + 45 ÷ 60 = 7.75 hours. To go back, multiply the decimal part by 60: 6.4 hours is 6 hours + 0.4 × 60 = 24 minutes, so 6:24.
Minutes to decimal hours chart
| Min | Hours | Min | Hours | Min | Hours |
|---|---|---|---|---|---|
| 1 | 0.02 | 21 | 0.35 | 41 | 0.68 |
| 2 | 0.03 | 22 | 0.37 | 42 | 0.70 |
| 3 | 0.05 | 23 | 0.38 | 43 | 0.72 |
| 4 | 0.07 | 24 | 0.40 | 44 | 0.73 |
| 5 | 0.08 | 25 | 0.42 | 45 | 0.75 |
| 6 | 0.10 | 26 | 0.43 | 46 | 0.77 |
| 7 | 0.12 | 27 | 0.45 | 47 | 0.78 |
| 8 | 0.13 | 28 | 0.47 | 48 | 0.80 |
| 9 | 0.15 | 29 | 0.48 | 49 | 0.82 |
| 10 | 0.17 | 30 | 0.50 | 50 | 0.83 |
| 11 | 0.18 | 31 | 0.52 | 51 | 0.85 |
| 12 | 0.20 | 32 | 0.53 | 52 | 0.87 |
| 13 | 0.22 | 33 | 0.55 | 53 | 0.88 |
| 14 | 0.23 | 34 | 0.57 | 54 | 0.90 |
| 15 | 0.25 | 35 | 0.58 | 55 | 0.92 |
| 16 | 0.27 | 36 | 0.60 | 56 | 0.93 |
| 17 | 0.28 | 37 | 0.62 | 57 | 0.95 |
| 18 | 0.30 | 38 | 0.63 | 58 | 0.97 |
| 19 | 0.32 | 39 | 0.65 | 59 | 0.98 |
| 20 | 0.33 | 40 | 0.67 | 60 | 1.00 |
Decimals are rounded to two places, the way most payroll systems show them. 20 minutes is 0.3333…, shown as 0.33.
Questions
How do I convert minutes to decimal?
Divide by 60. 15 minutes = 0.25, 20 minutes = 0.33, 30 minutes = 0.5, 45 minutes = 0.75.
How do I convert decimal hours to hours and minutes?
Keep the whole hours and multiply the decimal part by 60. 8.6 hours: 0.6 × 60 = 36 minutes, so 8:36.
Is 7.30 hours the same as 7:30?
No. 7:30 is seven and a half hours, or 7.5 in decimal. 7.30 decimal hours is 7 hours 18 minutes. Mixing them up is the most common payroll mistake.
Why does payroll use decimal hours?
Because you can multiply decimal hours by an hourly rate. 7.75 × $18 = $139.50 is right; 7:45 can't be multiplied directly.
How many decimal hours is 8 hours 20 minutes?
8.33 hours, because 20 ÷ 60 = 0.333…