Minutes to decimal hours chart
Payroll and invoicing systems want hours as a decimal number; clocks show hours and minutes. To convert, divide the minutes by 60: 45 minutes = 45 ÷ 60 = 0.75 hours. The chart below lists every minute from 1 to 60, rounded to two decimal places.
Download CSV Open the time card calculator
Conversion chart: 1–60 minutes
| Min | Hours |
|---|---|
| 1 | 0.02 |
| 2 | 0.03 |
| 3 | 0.05 |
| 4 | 0.07 |
| 5 | 0.08 |
| 6 | 0.10 |
| 7 | 0.12 |
| 8 | 0.13 |
| 9 | 0.15 |
| 10 | 0.17 |
| 11 | 0.18 |
| 12 | 0.20 |
| 13 | 0.22 |
| 14 | 0.23 |
| 15 | 0.25 |
| Min | Hours |
|---|---|
| 16 | 0.27 |
| 17 | 0.28 |
| 18 | 0.30 |
| 19 | 0.32 |
| 20 | 0.33 |
| 21 | 0.35 |
| 22 | 0.37 |
| 23 | 0.38 |
| 24 | 0.40 |
| 25 | 0.42 |
| 26 | 0.43 |
| 27 | 0.45 |
| 28 | 0.47 |
| 29 | 0.48 |
| 30 | 0.50 |
| Min | Hours |
|---|---|
| 31 | 0.52 |
| 32 | 0.53 |
| 33 | 0.55 |
| 34 | 0.57 |
| 35 | 0.58 |
| 36 | 0.60 |
| 37 | 0.62 |
| 38 | 0.63 |
| 39 | 0.65 |
| 40 | 0.67 |
| 41 | 0.68 |
| 42 | 0.70 |
| 43 | 0.72 |
| 44 | 0.73 |
| 45 | 0.75 |
| Min | Hours |
|---|---|
| 46 | 0.77 |
| 47 | 0.78 |
| 48 | 0.80 |
| 49 | 0.82 |
| 50 | 0.83 |
| 51 | 0.85 |
| 52 | 0.87 |
| 53 | 0.88 |
| 54 | 0.90 |
| 55 | 0.92 |
| 56 | 0.93 |
| 57 | 0.95 |
| 58 | 0.97 |
| 59 | 0.98 |
| 60 | 1.00 |
Two decimal places. The CSV also has four-place values (for example 10 min = 0.1667 h) if your payroll system keeps more precision.
The formula
decimal hours = whole hours + (minutes ÷ 60)
For 7 hours 20 minutes: 20 ÷ 60 = 0.33, so the total is 7.33 hours. Going the other way, multiply the decimal part by 60: 0.33 × 60 ≈ 20 minutes.
The most common mistake
Writing hours and minutes with a dot does not make a decimal. 7:30 is 7.50 hours, not 7.30. 7.30 hours is 7 hours 18 minutes, so a week of five such days would underpay by 60 minutes. The same slip turns 8:45 into 8.45 instead of 8.75.
Decimal back to minutes
| Decimal hours | Minutes |
|---|---|
| 0.10 | 6 min |
| 0.20 | 12 min |
| 0.25 | 15 min |
| 0.30 | 18 min |
| 0.40 | 24 min |
| 0.50 | 30 min |
| 0.60 | 36 min |
| 0.70 | 42 min |
| 0.75 | 45 min |
| 0.80 | 48 min |
| 0.90 | 54 min |
Worked example: one week
The sample card in the calculator totals 48 hours 10 minutes. 10 ÷ 60 = 0.1667, so the week is 48.17 hours. With overtime after 40 hours at 1.5 × a $20 rate, the 8 hours 10 minutes of overtime is 8.17 hours and the gross pay is $1,045.00 when calculated from exact minutes.
If you round the overtime to 8.17 first and then multiply, you get $1,045.10, $0.10 more. Small, but it repeats every week for every employee. Keep the minutes, or at least four decimal places, until the final pay figure; the calculator does this and only rounds what it displays.
Rounding punch times
Rounding clock times is a separate question from converting them. In the United States, the federal rule at 29 CFR 785.48(b) accepts recording start and stop times to the nearest 5 minutes, tenth of an hour or quarter hour, provided that over time employees are paid for all the time they actually work. State laws, other countries and employment contracts can set different rules, so check the ones that apply to you before rounding anything.
Use this chart
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