21 feet in yards
Result
The conversion result is: 21 feet is equivalent to 7 yards.[1]
Conversion formula
How to convert 21 feet to yards?
We know (by definition) that: 1 ft ≈ 0.33333333 yd.
We can set up a proportion to solve for the number of yards.
1 ft / 21 ft ≈ 0.33333333 yd / x yd
Now, we cross multiply to solve for our unknown x:
x yd ≈ (21 ft / 1 ft) * 0.33333333 yd → x yd ≈ 6.9999999299999995 yd
Conclusion:
21 ft ≈ 6.9999999299999995 yd
Conversion in the opposite direction
The inverse of the conversion factor is that 1 yard is equal to 0.142857142857143 times 21 feet.
It can also be expressed as: 21 feet is equal to 1 / 0.142857142857143 yards.
Approximation
An approximate numerical result would be: twenty-one feet is about zero yards, or alternatively, a yard is about zero point one four times twenty-one feet.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.