Minutes to decimal hours converter
Convert hours and minutes to decimal hours, or decimal hours back to hours and minutes. 7 hours 45 minutes is 7.75 hours, and 0.42 hours is 25.2 minutes, not 42 minutes. A chart for 0 to 60 minutes is below.
Last reviewed October 19, 2026. What you type stays in your browser.
Hours and minutes to decimal hours
Decimal hours7.75
465 minutes in total.
Decimal hours to hours and minutes
Hours, minutes, seconds0:25:12
As words0 h 25 min 12 s
In minutes25.2 minutes
The two formulas
Decimal hours = hours + minutes / 60. So 7 hours 45 minutes is 7 + 45/60 = 7.75.
Minutes = the decimal part of the hours x 60. So 0.42 hours is 0.42 x 60 = 25.2 minutes, which is 25 minutes 12 seconds. It is not 42 minutes: the digits after the point are a share of an hour, not a count of minutes.
Why decimals at all? Pay and invoices multiply hours by a rate, and 7.75 x $40 = $310 is a sum you can do. 7:45 x $40 is not.
Common conversions
| Time | Decimal hours | Note |
|---|---|---|
| 7 h 45 min | 7.75 | Exact |
| 7 h 30 min | 7.50 | Exact |
| 30 min | 0.50 | Exact |
| 20 min | 0.33 | Rounded: the exact value, one third of an hour, repeats |
| 37 min | 0.62 | Rounded: 0.6167 to two places |
| 15 min | 0.25 | Exact |
| 6 min | 0.10 | Exact |
| Decimal | Minutes | Hours:minutes:seconds |
|---|---|---|
| .42 hours | 25.2 | 0:25:12 |
| .22 hours | 13.2 | 0:13:12 |
| .39 hours | 23.4 | 0:23:24 |
| .65 hours | 39 | 0:39:00 |
| 0.40 hours | 24 | 0:24:00 |
| 0.5 hours | 30 | 0:30:00 |
0.40 hours is 24 minutes. 0.40 minutes, if that is what you meant, is 24 seconds.
Minutes to decimal hours chart, 0 to 60 minutes
| Minutes | Decimal | Minutes | Decimal | Minutes | Decimal | Minutes | Decimal |
|---|---|---|---|---|---|---|---|
| 0 | 0.00 | 15 | 0.25 | 30 | 0.50 | 45 | 0.75 |
| 1 | 0.02 | 16 | 0.27 | 31 | 0.52 | 46 | 0.77 |
| 2 | 0.03 | 17 | 0.28 | 32 | 0.53 | 47 | 0.78 |
| 3 | 0.05 | 18 | 0.30 | 33 | 0.55 | 48 | 0.80 |
| 4 | 0.07 | 19 | 0.32 | 34 | 0.57 | 49 | 0.82 |
| 5 | 0.08 | 20 | 0.33 | 35 | 0.58 | 50 | 0.83 |
| 6 | 0.10 | 21 | 0.35 | 36 | 0.60 | 51 | 0.85 |
| 7 | 0.12 | 22 | 0.37 | 37 | 0.62 | 52 | 0.87 |
| 8 | 0.13 | 23 | 0.38 | 38 | 0.63 | 53 | 0.88 |
| 9 | 0.15 | 24 | 0.40 | 39 | 0.65 | 54 | 0.90 |
| 10 | 0.17 | 25 | 0.42 | 40 | 0.67 | 55 | 0.92 |
| 11 | 0.18 | 26 | 0.43 | 41 | 0.68 | 56 | 0.93 |
| 12 | 0.20 | 27 | 0.45 | 42 | 0.70 | 57 | 0.95 |
| 13 | 0.22 | 28 | 0.47 | 43 | 0.72 | 58 | 0.97 |
| 14 | 0.23 | 29 | 0.48 | 44 | 0.73 | 59 | 0.98 |
Rounding decimals
Multiples of 3 minutes are exact at two decimal places: 3 minutes is 0.05, 6 minutes is 0.10 and 15 minutes is 0.25. Other minutes are rounded, because the exact value either repeats or needs more places: 20 minutes is 0.33 here, and 0.3333 at four places. Choose one number of decimal places and use it on every line of a timesheet. If you bill in increments, round each entry to the increment first, then convert.
Questions
How do I write 7 hours and 45 minutes in decimal?
7.75 hours. Divide the minutes by 60 (45 / 60 = 0.75) and add the hours.
What is 30 minutes in decimal hours?
0.5 hours, because 30 / 60 = 0.5.
What is 20 minutes in decimal hours?
20 minutes is exactly one third of an hour, which is 0.3333 and repeats. To two places it is 0.33. Pick one number of decimal places and use it for every entry.
What is 37 minutes in decimal?
37 / 60 = 0.6167, which is 0.62 to two places.
What is 0.42 of an hour in minutes?
25.2 minutes, which is 25 minutes 12 seconds (0.42 x 60). It is not 42 minutes.
What is 0.65 hours in minutes?
0.65 hours is 39 minutes (0.65 x 60). Likewise 0.22 hours is 13.2 minutes and 0.39 hours is 23.4 minutes.
How much is 0.40 minutes?
0.40 hours is 24 minutes. If you really mean 0.40 of a minute, that is 24 seconds.
How do I enter 20 minutes on a timesheet?
It depends on the timesheet. If it takes decimal hours, enter 0.33 (or 0.3333 if it allows four places). If it takes hours and minutes, enter 0:20. Check which one your system expects, then use the converter above to get the other.
How do you round time?
Decide the step (5, 6 or 15 minutes are common) and round to the nearest one, with halves going up. The timesheet calculator can round each day for you.
Is anything I type saved or sent?
No. The conversion happens in your browser and nothing you type is sent anywhere. The site only records that the converter was used.
Related
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