How much does a 12x12 room cost to install carpet?

That's a big room.It would be huge if the yard was 12 yards.It would be rather small if it was 12 feet square.If you want to know what your question means, multiply 4 by 4.

To calculate the square footage of carpet, divide the length times the width, in feet, of any space where you'll install flooring by 9.It is helpful to sketch out a diagram of your home's layout.

The total linear footage of the 1 x 12 boards is 30 linear feet.