Centimetre (cm) to Inch (in)
Convert centimetres to inches. Handy when reading American or British clothing sizes, comparing technical dimensions, or describing measurements to someone in a country that uses imperial units.
Frequently asked questions
1 centimetre equals 0.3937 inches. Conversely, 1 inch is exactly 2.54 cm. The conversion factor is exact, not rounded.
10 centimetres equals 3.937 inches — almost 4 inches. Handy reference: 5 cm ≈ 2 inches; 30 cm = 12 inches (exactly 1 foot).
An A4 sheet is 21 × 29.7 cm, which equals 8.27 × 11.69 inches. The American Letter format (8.5 × 11 inches = 21.6 × 27.9 cm) is slightly wider and shorter.
Divide the number of centimetres by 2.54. Example: 180 cm ÷ 2.54 = 70.87 inches — written as 5'10" in the US and UK height convention.