1 Inch equals 2.54 Centimeters.
| Inch (in) | Centimeter (cm) |
|---|---|
| 0.001 in | 0.00254 cm |
| 0.01 in | 0.0254 cm |
| 0.1 in | 0.254 cm |
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 5 in | 12.7 cm |
| 10 in | 25.4 cm |
| 25 in | 63.5 cm |
| 50 in | 127 cm |
| 100 in | 254 cm |
| 500 in | 1,270 cm |
| 1,000 in | 2,540 cm |
To convert Inches to Centimeters, multiply the value by 2.54. This factor comes from the ratio of the two units' definitions: one Inch equals 2.54 Centimeters.
For example: 1 Inch = 2.54 Centimeters, and 10 Inches = 25.4 Centimeters.
To convert in the reverse direction — from Centimeters to Inches — multiply by 0.393701.
The inch is a unit of length in the imperial and US customary systems, historically defined as the width of a man's thumb at the base of the nail. Other traditions rooted it in three barleycorns laid end to end. The word itself comes from the Latin "uncia," meaning one-twelfth — because the inch was one-twelfth of a foot. Today it is defined exactly as 25.4 millimeters.
Inches remain the primary unit of length for everyday measurement in the United States, and are still used alongside metric units in the United Kingdom and Canada. Screen sizes worldwide — televisions, laptops, smartphones, monitors — are almost universally described in diagonal inches, even in countries that otherwise use the metric system. Similarly, photographic film was measured in inches (35 mm film being 1.38 inches wide).
Pipe diameters and lumber dimensions in the US and Canada are specified in inches, though the "nominal" inch size of lumber rarely matches its actual measured dimension — a piece of "2×4" lumber is actually about 1.5 × 3.5 inches. Aviation altimeters in the US report barometric pressure in inches of mercury (inHg). The inch's persistence in a metric world speaks to the deep entrenchment of legacy standards in established industries.
The centimeter (cm) is one hundredth of a meter, a unit that sits comfortably between the very small and the human-scale. The average adult fingernail is about one centimeter wide; a typical pencil is roughly 19 cm long; and a standard sheet of A4 paper is 21 × 29.7 cm. Centimeters dominate everyday body measurements from clothing sizes to blood pressure cuffs.
In most countries that use the metric system, centimeters are the preferred unit for measuring height, furniture, fabric, and room dimensions. The unit was formally defined when France introduced the metric system in the 1790s as part of a rational, decimal-based approach to measurement that could replace the chaotic patchwork of local units that had prevailed across Europe.
Despite the global reach of the metric system, the centimeter appears in some surprising places in American usage. Screen sizes are still sometimes described in centimeters in international contexts, and medical imaging results — X-rays, ultrasounds, MRI scans — are almost always reported in centimeters and millimeters regardless of the country.
1 Inch equals 2.54 Centimeters.
To convert Inches to Centimeters, multiply by 2.54. For example, 1 Inch = 2.54 Centimeters.
1 Centimeter equals 0.393701 Inches.