# Hours and minutes to decimal

> To convert hours and minutes to decimal, divide the minutes by 60 and add the result to the hours: 2 hours 15 minutes is 2 + 15/60 = 2.25 hours. To go the other way, multiply the decimal part by 60: 1.75 hours is 1 hour 45 minutes. A total of 135 minutes becomes 2 hours 15 minutes.

Source: https://www.calterix.com/en-us/calculator/hours/hours-and-minutes/ · Updated 11/06/2026 · en-US

## Chart of minutes to decimal hours

The fraction of an hour for each minute, rounded to two places. Add it to the whole hours: 8 hours 45 minutes is 8.75.

| Minutes | Fraction of an hour | Minutes | Fraction of an hour | Minutes | Fraction of an hour |
| --- | --- | --- | --- | --- | --- |
| 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 |

Fraction = minutes ÷ 60. The last entry, 60 minutes, is one full hour.

## How to convert hours and minutes

```
Decimal = hours + minutes ÷ 60
Minutes = decimal part × 60
```
Example: 3 h 20 min = 3 + 20/60 = 3.33 hours. And 1.75 hours = 1 h + 0.75 × 60 min = 1 h 45 min.

The most common slip is reading 2:30 as 2.30. Thirty minutes is half an hour, or 0.5, so the right answer is 2.5 hours. On a timesheet, converting wrong changes the paycheck.

| Time | Minutes | Decimal |
| --- | --- | --- |
| 00:15 | 15 | 0.25 |
| 00:30 | 30 | 0.50 |
| 00:45 | 45 | 0.75 |
| 01:30 | 90 | 1.50 |
| 07:45 | 465 | 7.75 |
| 40:00 (one week) | 2,400 | 40.00 |

Common values.

To add and subtract times, use the [hours calculator](https://www.calterix.com/en-us/calculator/hours/), which also totals a time card.

## Decimal hours on timesheets and paychecks

Payroll software often tracks hours in decimals, so a shift of 7:45 is entered as 7.75. At $22 an hour, 7.75 hours is $170.50 for the day. Typing 7.45 by mistake would pay $163.90, which shorts you $6.60.

| Use | Hours and minutes | Decimal |
| --- | --- | --- |
| One day, 9:00 AM to 5:30 PM with a 30-minute lunch | 08:00 | 8.00 |
| A short shift, 4 hours 20 minutes | 04:20 | 4.33 |
| Two weeks at 37:30 per week | 75:00 | 75.00 |
| Overtime, 2 hours 30 minutes | 02:30 | 2.50 |
| Subtraction: 10:15 − 07:50 | 02:25 | 2.42 |

Minutes ÷ 60, and seconds ÷ 3,600.

For hours, minutes, and seconds, turn everything into seconds and divide by 3,600. A time of 1 h 30 min 45 s is 5,445 seconds, or 1.5125 hours.

## Frequently asked questions

### How do I convert minutes to hours?

Divide the minutes by 60. For 135 minutes, 135 ÷ 60 = 2.25 hours, or 2 hours 15 minutes. The calculator shows both forms.

### How do I convert hours and minutes to decimal?

Divide the minutes by 60 and add them to the hours. 3 hours 20 minutes is 3 + 20/60 = 3.33 hours. For 7 hours 45 minutes, the 45 minutes are 0.75, so the total is 7.75.

### What is 1.5 hours in hours and minutes?

It is 1 hour 30 minutes. Multiply the decimal part, 0.5, by 60 to get 30 minutes.

### How many minutes are in 0.25 hours?

0.25 hours is 15 minutes, since 0.25 × 60 = 15. In the same way, 0.75 hours is 45 minutes.

### How do I convert hours to minutes?

Multiply the hours by 60 and add the leftover minutes. For 2 hours 15 minutes, that is 2 × 60 + 15 = 135 minutes. The hh:mm option shows the total minutes.