**Full name:** centimetre

**Plural form:** centimetres

**Symbol:** cm

**Alternate spelling:** centimeters

**Category type:** length

**Scale factor:** 0.01

The SI base unit for length is the metre.

1 metre is equal to 100 cm.

Valid units must be of the **length** type.

You can use this form to select from known units:

A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundreth of a metre, the current SI base unit of length. A centimetre is part of a metric system. It is the base unit in the centimetre-gram-second system of units. A corresponding unit of area is the square centimetre. A corresponding unit of volume is the cubic centimetre.

The centimetre is a now a non-standard factor, in that factors of 10^{3} are often preferred. However, it is practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an adult person.

cm to quarter [print]

cm to perch

cm to megametre

cm to foot [Netherlands]

cm to li [imperial China]

cm to mile [nautical, US]

cm to cuadra

cm to ell [English]

cm to league [ancient Celtic]

cm to gnat's eye