Time Card Calculator
Total a week or two weeks with unpaid breaks, estimated overtime and optional gross pay.
Example · 42h 30m · 2h 30m overtime · $1,093.75
Decimal Hours Converter
Convert hours and minutes to decimal hours, or decimal hours back to hours and minutes.
Your entries stay in this browser
Decimal hours are converted back to minutes by rounding to the nearest minute. See calculation methodology
How to use it
- Input
- 7h 30m
- Calculation
- 7 + 30 ÷ 60
- Result
- 7.50 hours
- Input
- 7.58 hours
- Calculation
- 0.58 × 60 = 34.8 minutes → 35
- Result
- 7h 35m
- Choose a direction: hours and minutes to decimal, or decimal to hours and minutes.
- Enter the value.
- Select Convert.
- Use “Swap direction” to convert the result back.
How it works
Decimal hours are minutes divided by 60, shown with two, three or four decimal places and rounded half-up.
Converting back multiplies the decimal part by 60 and rounds to the nearest minute. That is why 7:30 is 7.50 hours, not 7.30: 0.30 hours is only 18 minutes.
decimal hours = hours + minutes ÷ 60
minutes = round(decimal hours × 60)Note. Hours go from 0 to 9999. Decimal input accepts up to four decimal places and must use a period.
Common minute conversions
| Minutes | Decimal hours |
|---|---|
| 6 minutes | 0.10 |
| 10 minutes | 0.17 |
| 15 minutes | 0.25 |
| 20 minutes | 0.33 |
| 30 minutes | 0.50 |
| 40 minutes | 0.67 |
| 45 minutes | 0.75 |
| 50 minutes | 0.83 |
Frequently asked questions
Why is 7.30 not 7 hours 30 minutes?
Decimal hours count fractions of an hour. 0.30 hours is 18 minutes, so 7.30 hours is 7h 18m, and 7h 30m is 7.50 hours.
How are minutes rounded?
To the nearest minute. 7.58 hours is 7h 34.8m, which rounds to 7h 35m.
How many decimal places should I use?
Hours in hundredths, such as 7.50, are common on time sheets. Choose 2, 3 or 4 places to match the system you use, and check that system's own rounding rules.