How do I convert minutes to decimal hours?

Divide the minutes by 60. 45 minutes is 45 ÷ 60 = 0.75 hours, so 7 hours 45 minutes is 7.75 hours.

Is 1.30 hours the same as 1 hour 30 minutes?

No. 1 hour 30 minutes is 1.50 hours. 1.30 hours is 1 hour 18 minutes, because 0.30 × 60 = 18.

Should I round to two decimals?

For display, two decimals is common. For totals, add the exact minutes first and convert once at the end, or the rounding on each row can make the total drift by a few hundredths.

Minutes to Decimal Hours Calculator and Chart

Converter

Enter hours and minutes. The result updates as you type and shows the division behind it.

Chart: 0 to 59 minutes

Each value is minutes ÷ 60, rounded to two decimals. Add it to the whole hours: 6 hours 20 minutes is 6 + 0.33 = 6.33.

Minutes as decimal hours, rounded to two places.
Minutes	Hours	Minutes	Hours
0 min	0.00	30 min	0.50
1 min	0.02	31 min	0.52
2 min	0.03	32 min	0.53
3 min	0.05	33 min	0.55
4 min	0.07	34 min	0.57
5 min	0.08	35 min	0.58
6 min	0.10	36 min	0.60
7 min	0.12	37 min	0.62
8 min	0.13	38 min	0.63
9 min	0.15	39 min	0.65
10 min	0.17	40 min	0.67
11 min	0.18	41 min	0.68
12 min	0.20	42 min	0.70
13 min	0.22	43 min	0.72
14 min	0.23	44 min	0.73
15 min	0.25	45 min	0.75
16 min	0.27	46 min	0.77
17 min	0.28	47 min	0.78
18 min	0.30	48 min	0.80
19 min	0.32	49 min	0.82
20 min	0.33	50 min	0.83
21 min	0.35	51 min	0.85
22 min	0.37	52 min	0.87
23 min	0.38	53 min	0.88
24 min	0.40	54 min	0.90
25 min	0.42	55 min	0.92
26 min	0.43	56 min	0.93
27 min	0.45	57 min	0.95
28 min	0.47	58 min	0.97
29 min	0.48	59 min	0.98

Minutes as decimal hours, rounded to two places.

Values for multiples of 3 minutes (3, 6, 9 … 57) are exact. The rest repeat forever, so 20 minutes is 0.3333…, shown as 0.33.

The 1.30 mistake

A timesheet that says 1:30 means one and a half hours. Typing it into a spreadsheet or payroll field as 1.30 records one hour and 18 minutes instead. On one shift that's 12 minutes; repeated across a team and a month, it adds up. Check whether each field wants hours and minutes or decimal hours before you type.

Common durations written both ways.
Hours:minutes	Decimal hours	Not
0:15	0.25	0.15
0:45	0.75	0.45
1:30	1.50	1.30
7:45	7.75	7.45
8:20	8.33	8.20

Common durations written both ways.

Adding up a week

Add minutes first, then convert once. Here is one person's week of actual time worked, after breaks (illustrative):

One week of worked time, converted per day and as a total.
Day	Hours:minutes	Decimal (rounded)
Mon	7:52	7.87
Tue	8:04	8.07
Wed	7:40	7.67
Thu	8:13	8.22
Fri	6:22	6.37
Week	38:11	38.18

One week of worked time, converted per day and as a total.

The week is 2,291 minutes, which is 38.18 hours. Adding the rounded daily figures instead gives 38.20. Small differences like this are why a payroll checklist compares totals and knows its rounding.

Durations, not clock times

Convert how long someone worked, not the time on the clock. 1:30 PM is a time of day, not 1.5 hours.
For a shift that crosses midnight, work out the duration first: 10:00 PM to 6:00 AM is 8 hours.
This converter doesn't round to the nearest quarter hour or apply any pay rule. It only converts.

Minutes to decimal hours converter and chart