Minutes to hours converter (and hours to minutes)

Minutes to hours: divide by 60. 90 minutes is 1.5 hours, 20 minutes is 0.3333 hours. Enter minutes and see decimal hours and the hours-and-minutes form while you type; hours to minutes works in the same box.

Example: Time 90 · Direction: Minutes to hours (min → h) → Answer: 90 min = 1.5 h. Source: BIPM – SI Brochure, Table 8: non-SI units accepted for use with the SI (1 h = 60 min = 3,600 s). Updated: 5 October 2026.

Time

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Result

Answer: 90 min = 1.5 h
Hours and minutes, rounded for payroll: That is 1 h 30 min. Rounded to two decimals for a timesheet: 1.5 h.
Working: 90 min ÷ 60 = 1.5 h
Timesheet chart: min h
5 0.0833
6 0.1
10 0.1667
12 0.2
15 0.25
18 0.3
20 0.3333
24 0.4
30 0.5
40 0.6667
45 0.75
48 0.8
50 0.8333
60 1
75 1.25
90 1.5
120 2
150 2.5
180 3
240 4
480 8
Times worth knowing: Time min h
6 minutes, one tenth of an hour 6 0.1
15 minutes, a quarter hour 15 0.25
20 minutes, a third of an hour 20 0.3333
45 minutes, three quarters 45 0.75
120 minutes, a feature film 120 2
480 minutes, an 8-hour shift 480 8
2,400 minutes, a 40-hour week 2,400 40; One hour is exactly 60 minutes. Decimal hours of 20, 40 or 50 minutes repeat forever (0.3333, 0.6667, 0.8333), so payroll systems round them.

min	h
5	0.0833
6	0.1
10	0.1667
12	0.2
15	0.25
18	0.3
20	0.3333
24	0.4
30	0.5
40	0.6667
45	0.75
48	0.8
50	0.8333
60	1
75	1.25
90	1.5
120	2
150	2.5
180	3
240	4
480	8

Time	min	h
6 minutes, one tenth of an hour	6	0.1
15 minutes, a quarter hour	15	0.25
20 minutes, a third of an hour	20	0.3333
45 minutes, three quarters	45	0.75
120 minutes, a feature film	120	2
480 minutes, an 8-hour shift	480	8
2,400 minutes, a 40-hour week	2,400	40

How it is calculated

How to convert minutes to hours

hours = minutes ÷ 60. For 90 minutes: 90 ÷ 60 = 1.5 h. Going back, minutes = hours × 60: 2.25 h × 60 = 135 min. Hours-and-minutes is the other way to write it: 135 min is 2 h 15 min, while 2.15 h would be 2 h 9 min – mixing the two forms is the most common timesheet error.

Decimal hours for payroll

Time clocks and payroll tools often want decimal hours. The easy ones: 15 min = 0.25 h, 30 min = 0.5 h, 45 min = 0.75 h. The awkward ones repeat: 20 min = 0.3333 h, 40 min = 0.6667 h, 50 min = 0.8333 h. Rounded to two decimals they are 0.33, 0.67 and 0.83, so three 20-minute jobs (60 minutes) show as 0.99 h – the reason many employers record time in 6-minute units, where every unit is exactly 0.1 h: 6 min = 0.1 h, 12 min = 0.2 h, 18 min = 0.3 h, 24 min = 0.4 h.

Work out the pay

With decimal hours the sum is one multiplication: 1 h 45 min is 105 min = 1.75 h, and at $20 an hour that is $35. Do not multiply 1.45 by 20, which would use 1 h 45 min as if it were a decimal.

Longer spans

An 8-hour shift is 480 minutes, a 40-hour week is 2,400 minutes, a day is 1,440 minutes and a feature film of 120 minutes is 2 hours.

A quick mental trick

Split the minutes into 60s and then take a fraction: 75 min = 60 + 15, so 1 h plus a quarter hour = 1.25 h. To add up a whole list of clock times such as 7:45 and 8:15 use minutes to decimal hours; for other time units see the time converter, and for your pay the work hours calculator.

Frequently asked questions

How many hours is 1 minute?

1 minute is 0.0167 hour (1 ÷ 60). 30 minutes is 0.5 hour.

How do I convert minutes to hours?

Divide the minutes by 60. Example: 90 min ÷ 60 = 1.5 h.

What is 45 minutes in decimal hours?

45 minutes is 0.75 hour. 15 minutes is 0.25 h, 30 minutes is 0.5 h and 20 minutes is 0.3333 h.

How many minutes is 2.5 hours?

2.5 hours is 150 minutes, or 2 h 30 min.

Is 1.30 hours the same as 1 hour 30 minutes?

No. 1.30 h is 1 h 18 min, because 0.30 × 60 = 18. 1 h 30 min is 1.5 h in decimals.

Sources and legal basis

BIPM – SI Brochure, Table 8: non-SI units accepted for use with the SI (1 h = 60 min = 3,600 s)

As of: 5 October 2026 · Editorial policy