How to convert minutes to decimal hours
To convert minutes to decimal hours, divide the minutes by 60. For example, 15 minutes ÷ 60 = 0.25, so 8:15 is 8.25 hours. Payroll uses decimal hours because pay is your rate multiplied by hours.
Cheat sheet
| Minutes | Decimal |
|---|---|
| 15 min | 0.25 |
| 30 min | 0.50 |
| 45 min | 0.75 |
| 60 min | 1.00 |
For other values, divide by 60: 10 min ≈ 0.17, 20 min ≈ 0.33, 40 min ≈ 0.67, 50 min ≈ 0.83.
Step-by-step
- Take the minutes part of your time (the part after the colon).
- Divide it by 60.
- Add it to the whole hours.
Example: 8 hours 45 minutes → 45 ÷ 60 = 0.75 → 8.75 hours.
Do it automatically
You don’t have to do the math by hand. Enter your Start and End times and the calculator shows your hours in both decimal and HH:MM.
Open the Decimal Hours Time Card Calculator, or get the app for Save, Excel/CSV export, and PDF.
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## Convert decimal back to minutesMultiply the decimal part by 60: 0.75 × 60 = 45 minutes. So 8.75 hours = 8 hours 45 minutes.
FAQ
What is 8 hours and 30 minutes in decimal? 8 hours 30 minutes = 8.5 hours (30 ÷ 60 = 0.5).
What is 15 minutes in decimal hours? 15 minutes = 0.25 hours.
Why does payroll use decimal hours? Pay is rate × hours, so minutes are converted to a decimal before multiplying by your rate.
Related
This tool provides estimates and is not legal, tax, or payroll advice.