cm to inches Converter
Convert metric centimeters (cm) directly to imperial inches (in) explicitly using our automated calculator.
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Conversion Formula
Relative Value Scale
Centimeters vs. Inches: A Metric History
The centimeter (cm) is a base unit of length within the globally recognized International System of Units (SI metric system). The inch (in) belongs completely to the British imperial and US customary systems of measurement.
Since 1959, the inch has been exactly formally defined directly against the metric system. The international yard agreement legally bound 1 inch to be exactly equal to 25.4 mm (or 2.54 cm).
Common Benchmark Conversions
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 cm | 0.39 in |
| 10 cm | 3.94 in |
| 30.48 cm | 12 in (1 Foot) |
| 100 cm (1 Meter) | 39.37 in |
Frequently Asked Questions
How many inches are in 1 centimeter?
One centimeter is equal to exactly 0.393701 inches. Conversely, 1 inch is equal to exactly 2.54 centimeters.
What is the formula to convert cm to inches?
To convert a value from centimeters to inches, multiply your value in cm by 0.393701, or implicitly divide it by 2.54.
When would I use this conversion?
Converting cm to inches is very commonly used in clothing measurements, screen sizes for TVs and monitors, and everyday engineering when collaborating between US and European hardware.
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