18 inches in centimeters

Result

The conversion result is: 18 inches is equivalent to 45.72 centimeters.[1]

Conversion formula
How to convert 18 inches to centimeters?

We know (by definition) that: 1 in = 2.54 cm.

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

1 in / 18 in = 2.54 cm / x cm

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

x cm = (18 in / 1 in) * 2.54 cm → x cm = 45.72 cm

Conclusion:

18 in = 45.72 cm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 centimeter is equal to 0.0218722659667542 times 18 inches.

It can also be expressed as: 18 inches is equal to 1 / 0.0218722659667542 centimeters.

Approximation

An approximate numerical result would be: eighteen inches is about zero centimeters, or alternatively, a centimeter is about zero point zero two times eighteen 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.