21 inches in yards
Result
The conversion result is: 21 inches is equivalent to 0.583333333333333 yards.[1]
Conversion formula
How to convert 21 inches to yards?
We know (by definition) that: 1 in ≈ 0.027777778 yd.
We can set up a proportion to solve for the number of yards.
1 in / 21 in ≈ 0.027777778 yd / x yd
Now, we cross multiply to solve for our unknown x:
x yd ≈ (21 in / 1 in) * 0.027777778 yd → x yd ≈ 0.583333338 yd
Conclusion:
21 in ≈ 0.583333338 yd
Conversion in the opposite direction
The inverse of the conversion factor is that 1 yard is equal to 1.71428571428571 times 21 inches.
It can also be expressed as: 21 inches is equal to 1 / 1.71428571428571 yards.
Approximation
An approximate numerical result would be: twenty-one inches is about zero point five seven yards, or alternatively, a yard is about one point seven one times twenty-one inches.
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.