Wall Square Footage Calculator
Our wall square footage calculator is a simple tool that allows you to calculate the area of yours walls and the amount of wallcovering needed to cover them.
Area160 sq ft20 × 8 ft
Square yards17.7778
Square metres14.8645
Square inches23,040
Acres0.003673
Perimeter56 ft17.0688 m, per area
The method
area = length × width, converted into every unit you might need
Square feet to square yards
Divide by nine, not by three. A yard is three feet, so a square yard is three feet by three feet — nine square feet. The same trap catches cubic yards, where the divisor is 27.
Carpet and some flooring is still sold by the square yard in the US, which is the main reason the conversion comes up.