21 centimeters in feet

Result

The conversion result is: 21 centimeters is equivalent to 0.688976377952756 feet.^[1]

Conversion formula
How to convert 21 centimeters to feet?

We know (by definition) that: 1 cm ≈ 0.032808399 ft.

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

1 cm / 21 cm ≈ 0.032808399 ft / x ft

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

x ft ≈ (21 cm / 1 cm) * 0.032808399 ft → x ft ≈ 0.6889763790000001 ft

Conclusion:

21 cm ≈ 0.6889763790000001 ft

Conversion in the opposite direction

The inverse of the conversion factor is that 1 foot is equal to 1.45142857142857 times 21 centimeters.

It can also be expressed as: 21 centimeters is equal to 1 / 1.45142857142857 feet.

Approximation

An approximate numerical result would be: twenty-one centimeters is about zero point six nine feet, or alternatively, a foot is about one point four four times twenty-one centimeters.