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# How much is a centimeter on a ruler?

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Most standard rulers are 30 centimeters long, which makes 1 centimeter equal to one-thirtieth of the length of a standard 12-inch, or 30-centimeter, ruler. The centimeter is a metric unit of measure that, according to Metric-Conversions, is equal to 0.3937 inches.

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The centimeter is a standard unit of measure of length in the metric system, and it is equal to one one-hundredth of a meter. If a meter stick is divided into 100 equal pieces, each one of the pieces is measured as 1 centimeter in length. Inches are a comparable unit of measure of length in the English system. A single inch is equivalent to 2.54 centimeters, so length in inches can be converted to centimeters by multiplying the inches measured by 2.54.

According to Dictionary.com, the word "centimeter" has been in use since the 1800s. It comes from the French word "centum," which means "hundred," and the root of the word is "meter." The standard abbreviation for the word "centimeter" is "cm." Most rulers also show each centimeter sub-divided into 10 smaller, equal portions. These indicate the length of 1 millimeter, which is equal to one one-thousandth of a meter. There are 25.4 millimeters in a single inch.

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## Related Questions

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A person measures in millimeters by comparing the length of the object in question with the tick marks on a metric ruler or the metric side of a standard ruler. The metric side is labeled in millimeters or centimeters with small tick marks that each represent one millimeter.

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A standard full size ruler measures 12 inches in length. In addition to the marks for inches, many rulers also include a scale of 30 centimeters, allowing metric measurements.

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A metric ruler is used to measure things in centimeters and millimeters with 1 centimeter equaling 10 millimeters, so a ruler will have 10 tiny millimeter lines between each centimeter to denote the millimeter. This can be seen by looking at the ruler and seeing the longer lines on the ruler, which are centimeter marks, and the shorter lines on the centimeter, which are millimeter marks.

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One centimeter is equal to 10 millimeters. It is also equal to 0.1 decimeter and 0.01 meter. One kilometer contains 100,000 centimeters. Millimeters, decimeters, centimeters, meters and kilometers are all units of length in the metric system.