None, since there can be no conversion. A yard is a measure of length in 1-dimensional space while a square foot is a measure of area in 2-dimensional space. The two measure different characteristics and, according to the most basic principles of dimensional analysis, any attempt at comparisons or conversions between the two are fundamentally flawed.
27 square feet = 3 square yards.
1 square yard = 9 square feet 3 square yards = 27 square feet
1 square yard = 9 square feet 3 square yards = 27 square feet
9 square feet = 1 square yard 18 square feet = 2 square yards 27 square feet = 3 square yards . . . 655 square feet = 727/9 square yards
One square yard is nine square feet, so 27 square feet is equivalent to 3 square yards. So 3 yards of concrete will cover 27 square feet.
1 square yard = 9 square feet 2 square yards = 18 square feet 3 square yards = 27 square feet . . . 24 square yards = 216 square feet
To convert square feet to square yards divide by 27.
27 ^2 yards (that is 27 yards squared) converts to feet ^2 by 27yds^2/1 * 3ft/yd *3ft/yd = 243 feet^2 or 243 feet squared
9 square feet = 1 square yard13.5' x 18' = 243 square feet = 27 square yards
9 square feet per yard x 3 =27 or 27 cubic feet per cubic yard
27 feet = 9 yards
1 yard = 3 feet 1 square yard = 9 square feet 3 square yards = 27 square feet