Decimal Time Converter
Hours:minutes ⇄ decimal hours, both directions, plus a complete minutes table.
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decimal hours
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hours:minutes
Minutes to decimal hours table
| Minutes | Decimal | Minutes | Decimal |
|---|---|---|---|
| 5 | 0.08 | 35 | 0.58 |
| 10 | 0.17 | 40 | 0.67 |
| 15 | 0.25 | 45 | 0.75 |
| 20 | 0.33 | 50 | 0.83 |
| 25 | 0.42 | 55 | 0.92 |
| 30 | 0.50 | 60 | 1.00 |
| 35 | 0.58 | — | — |
| 40 | 0.67 | — | — |
| 45 | 0.75 | — | — |
| 50 | 0.83 | — | — |
| 55 | 0.92 | — | — |
| 60 | 1.00 | — | — |
| 45 | 0.75 | 60 | 1.00 |
The one rule: minutes ÷ 60
Every minute is 1/60 of an hour. 15 minutes = 0.25, 30 = 0.50, 45 = 0.75. So 8:45 is 8.75 decimal hours, and 22 minutes is 0.37 (rounded from 0.3666). Payroll systems round to two decimals; the converter shows exactly what they'll multiply by your rate.
Where the classic mistakes happen
- Writing 7.45 for 7 h 45 m — correct is 7.75
- Adding h:mm as if it were decimal (8:30 + 8:30 = 17:00, not 16.60)
- Rounding twice — round once, at the end, to two decimals
Printable minutes-to-decimal chart
Frequently asked questions
How do I convert hours and minutes to decimal hours?
Divide the minutes by 60 and add to the hours: 8 h 30 m = 8 + 30/60 = 8.50. The converter above does it instantly, both directions.
Is 7 hours 45 minutes 7.45 or 7.75?
7.75. Minutes are sixtieths, not hundredths: 45/60 = 0.75. Writing 7.45 on a timesheet underpays by 18 minutes per day.
Why do payroll systems want decimal hours?
Multiplication. Rate × decimal hours is one step: 7.75 × $22 = $170.50. h:mm has to be converted anyway, so payroll does it up front — this page matches what they use.