Centimeters to Inches

Convert centimeters (cm) to inches instantly.

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From unit
To unit
Centimeters
cm
Inches
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Quick reference
Centimeters (cm)Inches (in)
1 cm0.393701 in
5 cm1.968504 in
10 cm3.937008 in
30 cm11.811024 in
50 cm19.685039 in
100 cm39.370079 in
150 cm59.055118 in
180 cm70.866142 in
200 cm78.740157 in
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Centimeters vs inches: two systems, one world

The centimeter is one hundredth of a meter, the SI base unit of length. It is used for everyday measurements in metric countries — body height, screen sizes, clothing dimensions, and construction.

The inch was historically defined as the width of a thumb, then standardized in various ways across cultures. Since 1959, one international inch is defined as exactly 2.54 centimeters — making the conversion precise and exact.

Common reference points: a standard credit card is 8.56 cm (3.37 inches) wide. A typical door is 200 cm (78.7 inches, or about 6 feet 7 inches) tall. Screen sizes on monitors and TVs are always measured diagonally in inches, even in metric countries.

Frequently asked questions
How many inches in a centimeter?
One centimeter equals 0.3937 inches.
What is 180 cm in inches?
180 cm equals approximately 70.87 inches, or 5 feet 10.87 inches.