21 hours (h) to minutes (min)

21 hours = 1260 minutes

To convert 21 hours to minutes, multiply 21 hours by the conversion factor 60 (since 1 hour equals 60 minutes).

The conversion formula is :
minutes = hours × 60

Here's the calculation to convert 21 h to min :
21 hours × 60 = 1260 minutes

Therefore, 21 hours is equal to 1260 minutes

An hour is a unit of time equal to 60 minutes, defined as 1/24 of a day or the time it takes the Earth to complete 1/24 of a full rotation on its axis. It is abbreviated using the symbol h or hr (e.g. 21 h or 21 hr).

The minute is a unit of time equal to 60 seconds. It is abbreviated using the symbol min (e.g. 1260 min).