How many mins in 4 hours and 30 mins?

To calculate the total minutes in 4 hours and 30 minutes, first convert the hours to minutes. There are 60 minutes in an hour, so 4 hours is 4 × 60 = 240 minutes. Adding the 30 minutes gives a total of 240 + 30 = 270 minutes. Therefore, there are 270 minutes in 4 hours and 30 minutes.