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UnitCalculators.com

Hours to minutes

Multiply hours by 60 to get minutes.

1 h = 60 minBIPM SI
h
120min

2 h = 120 min

How to convert hours to minutes

The minute is exactly 60 seconds. The hour is exactly 60 minutes (3600 seconds).

Worked example — 2 h: 2 × 60 = 120 min.

Hours to minutes table

Common conversions. The reverse table is on minutes to hours.
HoursMinutes
0.25 h15 min
0.5 h30 min
1 h60 min
1.5 h90 min
2 h120 min
3 h180 min
5 h300 min
8 h480 min
24 h1,440 min

Reverse and related

About hours and minutes

Hour (h)

1 h = 60 min

Definition. Exactly 60 minutes (3600 seconds)

History and origin

The hour divides the day into 24 parts, a scheme inherited from ancient Egypt, and equals exactly 60 minutes or 3600 seconds. Fixed-length hours replaced older seasonal hours as mechanical clocks spread.

Current use

Hours structure the working day, schedules and pay, and are read off every clock.

Source: BIPM SI Brochure (2019); the second is defined by the caesium-133 transition

Minute (min)

1 min = 0.0166667 h

Definition. Exactly 60 seconds

History and origin

The minute, exactly 60 seconds, comes from the Babylonian base-60 system passed down through astronomy, the same system that gives 60 minutes to the hour. Its name means a small part.

Current use

Minutes are an everyday unit for timing, scheduling and cooking.

Source: BIPM SI Brochure (2019); the second is defined by the caesium-133 transition

Where people use this

Hours: schedules, work and pay. Minutes: everyday timing, cooking. 1.5 hours is 90 minutes.

How we know this is right
The factor is fixed by the standards that define the units, not chosen — so it is exact, not a measurement:
1 min = 0.01666666667 h, so 1 h = 1 ÷ 0.01666666667 = 60 min.

Every value is carried to full double precision; the display is rounded.

Both units are defined in BIPM SI Brochure (2019); the second is defined by the caesium-133 transition.

Questions people ask

How many minutes in an hour?

One hour is exactly 60 minutes.

How many minutes is 1.5 hours?

1.5 hours is 90 minutes.

How many minutes is 8 hours?

8 hours is 480 minutes.

All hour conversions