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The metric system is used worldwide in international trade and in science.
The metric system, which is based on a system of 10, is simple. To change to a larger or smaller unit, you simply multiply or divide by a multiple of 10. It's easy! All metric units are changed like this. Looking at the conversion charts on our pages will help you understand the metric system.
The other system, the English system, is difficult to use because it hard to convert from one unit to another so we included a converter on each page to help convert from the English system to the metric system.