In the metric system, both millimeters (mm) and centimeters (cm) are units of length used for measuring shorter distances. The conversion between millimeters and centimeters is simple since both are part of the metric system, which is based on powers of ten. This article provides an in-depth explanation of millimeters and centimeters, their uses, how to convert mm to cm and vice versa, along with a conversion table and practical examples.
What is a Millimeter?
A millimeter (mm) is a unit of length in the metric system and is one of the smallest commonly used units for measuring length. One millimeter is equal to one-thousandth of a meter (1 mm = 0.001 meters) or one-tenth of a centimeter.
History of the Millimeter
The millimeter is a subdivision of the meter, the base unit of length in the metric system. The metric system was developed in France during the French Revolution in the late 18th century to standardize units of measurement across the world. The millimeter, being a smaller unit, is useful for measuring very small objects and distances where high precision is required.
Uses of the Millimeter
- Engineering and Manufacturing: Millimeters are commonly used in engineering and mechanical industries to measure the dimensions of small components.
- Medical and Scientific Fields: Millimeters are used for precise measurements, such as in medical imaging, anatomical descriptions, and in the creation of scientific instruments.
- Everyday Measurements: Millimeters are used in many everyday applications, like measuring the thickness of paper, the diameter of a small object, or the spacing between mechanical components.
What is a Centimeter?
A centimeter (cm) is another unit of length in the metric system. One centimeter is equal to one-hundredth of a meter (1 cm = 0.01 meters) or 10 millimeters.
History of the Centimeter
The centimeter, like the millimeter, is derived from the meter. Since its introduction during the French Revolution, it has become one of the most widely used units for measuring short distances. The centimeter is commonly used in everyday situations as well as in various scientific and engineering fields.
Uses of the Centimeter
- Everyday Measurements: Centimeters are frequently used for measuring the height of a person, the size of objects like books or furniture, and distances in construction projects.
- Science and Education: In science, centimeters are used to measure lengths, volumes, and distances in a range of experiments and calculations.
- Fashion and Tailoring: Centimeters are the standard unit for measuring clothing, fabric, and body dimensions in tailoring and fashion design.
mm to cm Conversion Table
Since 1 centimeter is equal to 10 millimeters, the conversion between millimeters and centimeters is simple. Below is a conversion table for some common values:
| Millimeters (mm) | Centimeters (cm) |
|---|---|
| 1 mm | 0.1 cm |
| 5 mm | 0.5 cm |
| 10 mm | 1 cm |
| 20 mm | 2 cm |
| 50 mm | 5 cm |
| 100 mm | 10 cm |
| 200 mm | 20 cm |
| 500 mm | 50 cm |
| 1000 mm | 100 cm |
This table provides a quick reference for converting millimeters to centimeters for common values.
How to Convert mm to cm?
Converting millimeters to centimeters is very straightforward because the metric system is based on powers of ten. Since there are 10 millimeters in 1 centimeter, to convert millimeters to centimeters, you simply divide the number of millimeters by 10.
Formula for mm to cm Conversion:
Centimeters = Millimeters / 10This formula allows for an easy and quick conversion between millimeters and centimeters.
Step-by-Step Conversion Example
Example 1: Convert 50 mm to cm
Use the conversion formula:
Centimeters = 50 / 10Calculate:
50 / 10 = 5 cmTherefore, 50 millimeters is equal to 5 centimeters.
Example 2: Convert 120 mm to cm
Use the conversion formula:
Centimeters = 120 / 10Calculate:
120 / 10 = 12 cmTherefore, 120 millimeters is equal to 12 centimeters.