Centimetre

Encyclopedia : C : CE : CEN : Centimetre

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Length Conversion Formulas

Conversion from	to	Formula
Centimetres	Inches	in = 0.3937 x cm
Inches	Centimetres	cm = 2.54 x in
Centimetres	Metres	m = 0.01 x cm
Centimetres	Feet	ft = 0.03281 x cm
[Length Conversion Tool]

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 10³ 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.

millimetre << centimetre << decimetre << metre << kilometre

Equivalence to other units of length

1 centimetre is equal to:

• 0.01 metres, which can be represented by 1 E-2 m (1 metre is equal to 100 centimetres)
• about 0.3937 international inches (1 international inch is equal to 2.54 centimetres)

1 cubic centimetre is equal to 1 millilitre, under the current SI system of units.

Uses of centimetre

In addition to its use in the measurement of length, the centimetre is used:

• sometimes, to report the level of rainfall as measured by a rain gauge.

Unicode symbols

For the purposes of compatibility with Chinese, Japanese and Korean (CJK) characters, Unicode has symbols for:

• centimetre (㎝) - code 339D
• square centimetre (㎠) - code 33A0
• cubic centimetre (㎤) - code 33A4

They are useful only with East Asian fixed-width CJK fonts, because they are equal in size to one Chinese character.

See also

• 1 E-2 m
• SI
• SI prefix
• Metric system
• Orders of magnitude
• Conversion of units, for comparison with other units of length

References

• [CJK Compatibility excerpt from The Unicode Standard, Version 4.1.]

 

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