Minutes, seconds and decimal time
Decimal Hours Calculator
Convert hours, minutes and seconds to decimal hours—or convert a decimal value back to standard time. Choose two or three decimal places.
Convert time
How to convert minutes to decimal hours
Divide minutes by 60 and seconds by 3,600, then add the whole hours. For 8 hours 30 minutes: 30 ÷ 60 = 0.50, so the total is 8.50 hours.
Decimal hours are not clock minutes
The digits after the decimal point are a fraction of an hour. For example, 7.25 hours means 7 hours 15 minutes—not 7 hours 25 minutes.
Payroll examples
- 7 hours 15 minutes becomes 7.25 decimal hours.
- 8 hours 6 minutes becomes 8.10 decimal hours at two places.
- 6.75 decimal hours becomes 6 hours 45 minutes.
Minutes-to-decimal conversion chart
Use this table for quick timesheet and payroll-hour conversions. Two decimal places are common for display; three retain more precision.
| Minutes | Decimal (2 places) | Decimal (3 places) |
|---|---|---|
| 1 | 0.02 | 0.017 |
| 2 | 0.03 | 0.033 |
| 3 | 0.05 | 0.050 |
| 4 | 0.07 | 0.067 |
| 5 | 0.08 | 0.083 |
| 6 | 0.10 | 0.100 |
| 7 | 0.12 | 0.117 |
| 8 | 0.13 | 0.133 |
| 9 | 0.15 | 0.150 |
| 10 | 0.17 | 0.167 |
| 11 | 0.18 | 0.183 |
| 12 | 0.20 | 0.200 |
| 13 | 0.22 | 0.217 |
| 14 | 0.23 | 0.233 |
| 15 | 0.25 | 0.250 |
| 16 | 0.27 | 0.267 |
| 17 | 0.28 | 0.283 |
| 18 | 0.30 | 0.300 |
| 19 | 0.32 | 0.317 |
| 20 | 0.33 | 0.333 |
| 21 | 0.35 | 0.350 |
| 22 | 0.37 | 0.367 |
| 23 | 0.38 | 0.383 |
| 24 | 0.40 | 0.400 |
| 25 | 0.42 | 0.417 |
| 26 | 0.43 | 0.433 |
| 27 | 0.45 | 0.450 |
| 28 | 0.47 | 0.467 |
| 29 | 0.48 | 0.483 |
| 30 | 0.50 | 0.500 |
| 31 | 0.52 | 0.517 |
| 32 | 0.53 | 0.533 |
| 33 | 0.55 | 0.550 |
| 34 | 0.57 | 0.567 |
| 35 | 0.58 | 0.583 |
| 36 | 0.60 | 0.600 |
| 37 | 0.62 | 0.617 |
| 38 | 0.63 | 0.633 |
| 39 | 0.65 | 0.650 |
| 40 | 0.67 | 0.667 |
| 41 | 0.68 | 0.683 |
| 42 | 0.70 | 0.700 |
| 43 | 0.72 | 0.717 |
| 44 | 0.73 | 0.733 |
| 45 | 0.75 | 0.750 |
| 46 | 0.77 | 0.767 |
| 47 | 0.78 | 0.783 |
| 48 | 0.80 | 0.800 |
| 49 | 0.82 | 0.817 |
| 50 | 0.83 | 0.833 |
| 51 | 0.85 | 0.850 |
| 52 | 0.87 | 0.867 |
| 53 | 0.88 | 0.883 |
| 54 | 0.90 | 0.900 |
| 55 | 0.92 | 0.917 |
| 56 | 0.93 | 0.933 |
| 57 | 0.95 | 0.950 |
| 58 | 0.97 | 0.967 |
| 59 | 0.98 | 0.983 |
| 60 | 1.00 | 1.000 |
Frequently asked questions
What is 45 minutes in decimal hours?
45 ÷ 60 = 0.75, so 45 minutes is 0.75 hours.
What is 20 minutes in decimal hours?
20 ÷ 60 = 0.333…, displayed as 0.33 to two decimal places or 0.333 to three.
Why can the converted value differ by a few seconds?
A rounded decimal cannot always represent an exact whole number of seconds. Reverse conversion uses the entered decimal and rounds to the nearest second.
Should payroll use two or three decimal places?
Use the precision required by the payroll system or policy. ClockSlate shows both while retaining seconds for the conversion itself.