📐 CM to Inch Converter
Convert centimetres to inches instantly. Fast and accurate metric to imperial conversion.
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How to Convert Centimetres to Inches
To convert centimetres to inches, divide by 2.54 (or multiply by 0.3937). The factor 2.54 is exact — 1 inch is defined as precisely 2.54 centimetres under the international standard adopted in 1959. This means every centimetre-to-inch conversion is a simple division with no approximation involved.
Height is the most common reason people use this conversion. In and Europe, heights are typically recorded in centimetres, but many international websites, clothing size guides, and American resources use feet and inches. A person who is 180 cm tall is approximately 5 feet 11 inches (70.9 inches). At 170 cm, that's 5 feet 7 inches. Knowing your height in both systems avoids confusion on visa applications, dating profiles, and clothing purchases from international brands.
Clothing and shoe sizes often cross metric and imperial systems. A waist measurement of 82 cm is approximately 32.3 inches — which corresponds to a size 32 trouser in most men's sizing. Trouser leg lengths are also typically stated in inches (30, 32, 34) even in countries that use metric, making this conversion practically useful for anyone shopping online.
Home renovation and DIY projects frequently require this conversion. Furniture dimensions from European manufacturers are in centimetres, while some imported fittings, pipes, or tools may specify sizes in inches. Converting accurately prevents fitting errors and wasted purchases.
Common CM to Inch Reference
10 cm = 3.94 in | 30 cm = 11.81 in | 60 cm = 23.6 in | 100 cm = 39.4 in | 150 cm = 59.1 in | 180 cm = 70.9 in
How to Convert Centimetres to Inches
To convert centimetres to inches, divide by 2.54. This is the exact, internationally defined conversion: 1 inch = 2.54 centimetres exactly. The conversion works in both directions: to go from inches to centimetres, multiply by 2.54.
This conversion is used constantly in construction, clothing (waist sizes, inseam lengths), screen sizes, medical measurements, and any situation requiring unit conversion between metric and imperial systems.