A minutes to decimal calculator converts hours and minutes into decimal hours, the format payroll systems and timesheets use. Enter the hours, minutes and optional seconds and the calculator returns the decimal hours, rounded to two places for payroll. You can also add an hourly rate to see the pay, or switch to the other direction and turn decimal hours back into hours and minutes.
For example, 7 hours 45 minutes is 7.75 decimal hours, because 45 minutes is three quarters of an hour.
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How to convert minutes to decimal hours
The formula
There are 60 minutes in an hour, so divide the minutes by 60 and add the result to the whole hours.
decimal hours = hours + minutes ÷ 60 + seconds ÷ 3600
To convert only minutes, set the hours to zero. For 37 minutes, 37 ÷ 60 = 0.6167 hours.
Converting decimal hours back to minutes
Keep the whole number as the hours, then multiply the decimal part by 60 to get the minutes.
minutes = (decimal hours − whole hours) × 60
Why timesheets use decimal hours
Pay is calculated as hours multiplied by a rate, and that is easy only when the hours are a single decimal number. 6 hours 30 minutes cannot be multiplied directly, but 6.5 hours can.
Minutes to decimal conversion chart
| Minutes | Decimal hours | Rounded to 2 places |
|---|---|---|
| 1 | 0.0167 | 0.02 |
| 2 | 0.0333 | 0.03 |
| 3 | 0.05 | 0.05 |
| 4 | 0.0667 | 0.07 |
| 5 | 0.0833 | 0.08 |
| 10 | 0.1667 | 0.17 |
| 15 | 0.25 | 0.25 |
| 20 | 0.3333 | 0.33 |
| 25 | 0.4167 | 0.42 |
| 30 | 0.5 | 0.5 |
| 35 | 0.5833 | 0.58 |
| 40 | 0.6667 | 0.67 |
| 45 | 0.75 | 0.75 |
| 50 | 0.8333 | 0.83 |
| 55 | 0.9167 | 0.92 |
| 60 | 1 | 1 |
Worked examples
Example 1: 7 hours 45 minutes
45 ÷ 60 = 0.75, so 7 hours 45 minutes is 7.75 decimal hours.
Example 2: 8 hours 20 minutes
20 ÷ 60 = 0.3333, so the total is 8.3333 hours, or 8.33 rounded to two places. At $18.50 an hour the pay is 8.3333 × 18.50 ≈ $154.17.
Example 3: 6 hours 30 minutes at an hourly rate
30 ÷ 60 = 0.5, so the time is 6.5 hours. At $18.50 an hour the pay is 6.5 × 18.50 = $120.25.
Example 4: decimal hours to hours and minutes
Convert 3.4 hours. The whole number is 3 hours, and 0.4 × 60 = 24 minutes, so 3.4 hours is 3 hours 24 minutes.
Frequently asked questions
How do you convert minutes to decimal?
Divide the minutes by 60. For example, 45 minutes is 45 ÷ 60 = 0.75 of an hour. If you also have whole hours, add them to the result.
How do you convert hours and minutes to decimal hours?
Add the hours to the minutes divided by 60. 7 hours 45 minutes is 7 + 45 ÷ 60 = 7.75.
How do you convert decimal hours to hours and minutes?
Keep the whole number as hours and multiply the decimal part by 60 to get minutes. For 3.4 hours, 0.4 × 60 = 24 minutes.
What is 15 minutes as a decimal?
0.25 hours, because 15 ÷ 60 = 0.25. Likewise 30 minutes is 0.5, 45 minutes is 0.75 and 10 minutes is about 0.17.
Should I round decimal hours?
Payroll usually rounds to two decimal places. Check your employer’s rounding rule, because rounding every entry can add or remove a small amount of pay over a pay period.