公分轉英吋計算器
公分與英吋雙向換算，附身高對照表與換算公式
Height breakdown
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Conversion formula (1 inch = 2.54 cm exactly)
inches = cm ÷ 2.54 · cm = inches × 2.54
Quick Conversions (common heights)
CM to Inches Height Chart
| Centimeters | Inches | Feet & Inches | Meters |
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CM to Inches Conversion FAQ
How many inches is 1 cm?
One centimeter equals approximately 0.3937 inches. The exact conversion uses the international definition 1 inch = 2.54 cm, so inches = cm ÷ 2.54.
How tall is 170 cm in feet and inches?
170 cm equals 66.93 inches, which is 5 feet 6.9 inches — commonly written as 5′7″. The calculator shows this breakdown automatically for any height you enter.
Why is 1 inch exactly 2.54 cm?
Since the 1959 International Yard and Pound Agreement, the inch has been defined as exactly 2.54 centimeters. Before that, the US and UK inches differed slightly (about 2.5400005 cm and 2.539997 cm).
How do I convert inches back to centimeters?
Multiply by 2.54. For example, a 32-inch TV screen is 32 × 2.54 = 81.28 cm. This calculator works in both directions — type in either field and the other updates instantly.