This decimal hours calculator converts hours and minutes into decimal hours, and decimal hours back into hours and minutes. Payroll systems usually multiply pay by decimal hours, so 7 hours 45 minutes needs to become 7.75 before you multiply by your rate. A full minute-to-decimal chart is below the tool.
Minutes to decimal hours chart
| Minutes | Decimal hours | Minutes | Decimal hours | Minutes | Decimal 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 |
How to use the decimal hours calculator
- To convert time to decimal, enter hours and minutes in the first box.
- Read the decimal hours result.
- To convert back, enter decimal hours in the second box.
- Read the result in hours and minutes.
- Use the chart on this page to look up any minute from 1 to 60.
Example: 7 hours 45 minutes and 8.4 hours
To convert 7 hours 45 minutes, divide 45 by 60 to get 0.75 and add the 7 hours, giving 7.75 hours. To convert 8.4 hours back, multiply the decimal part by 60: 0.4 x 60 = 24 minutes, so 8.4 hours is 8 hours 24 minutes. At $20 per hour, 7.75 hours earns 7.75 x $20 = $155.
The decimal hours formula
Decimal hours equal hours plus minutes divided by 60. To go the other way, the whole number is the hours and the decimal part multiplied by 60 is the minutes. Because one minute is 1/60 of an hour, or about 0.0167, the chart rounds each value to two decimal places.
Frequently asked questions
How do I convert minutes to decimal hours?
Divide the minutes by 60. For example, 15 minutes is 15 / 60 = 0.25 hours.
What is 7 hours 45 minutes in decimal?
It is 7.75 hours.
What is 30 minutes in decimal hours?
30 minutes is 0.5 hours.
Why do timesheets use decimal hours?
Decimal hours are easier to multiply by a pay rate. Hours and minutes use a base of 60, which makes multiplication awkward.
How do I convert decimal hours back to minutes?
Multiply the part after the decimal point by 60. For 3.25 hours, 0.25 x 60 = 15 minutes, so it is 3 hours 15 minutes.