21 inches in feet

Result

The conversion result is: 21 inches is equivalent to 1.75 feet.[1]

Conversion formula
How to convert 21 inches to feet?

We know (by definition) that: 1 in ≈ 0.083333333 ft.

We can set up a proportion to solve for the number of feet.

1 in / 21 in ≈ 0.083333333 ft / x ft

Now, we cross multiply to solve for our unknown x:

x ft ≈ (21 in / 1 in) * 0.083333333 ft → x ft ≈ 1.7499999929999999 ft

Conclusion:

21 in ≈ 1.7499999929999999 ft

Conversion in the opposite direction

The inverse of the conversion factor is that 1 foot is equal to 0.571428571428571 times 21 inches.

It can also be expressed as: 21 inches is equal to 1 / 0.571428571428571 feet.

Approximation

An approximate numerical result would be: twenty-one inches is about zero feet, or alternatively, a foot is about zero point five six 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.