None.
A yard is a measure of length or distance in 1-dimensional space while a square foot is a measure of area in 2-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid without some addition information.
444 square yards = 3,996 square feet.
7.3 square yards in 66 square feet.
180 square feet = 20 square yards.
105.55 square yards. (divide square feet by 9 to get square yards)
22.22 square yards.
71.11 square yards.
3,500 square feet is equal to 389 square yards
600 square feet equals 66.7 square yards.
135 square feet. (just multiply square yards by 9 to get square feet).
200 square feet
2,500 square feet is equal to about 277.7 square yards.
28.88889 sq. yards.