Centimeter (cm) to Inch (in)
Convert centimeters to inches. Handy when reading American clothing sizes, comparing technical dimensions, or describing measurements to someone who uses the US customary system.
Frequently asked questions
1 centimeter equals 0.3937 inches. Conversely, 1 inch is exactly 2.54 cm. The conversion factor is exact, not rounded.
10 centimeters 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 US Letter format (8.5 × 11 inches = 21.6 × 27.9 cm) is slightly wider and shorter — used as the standard paper size in the United States.
Divide the number of centimeters by 2.54. Example: 180 cm ÷ 2.54 = 70.87 inches — written as 5'10" in the US height convention.