How to Use a Metric Conversion Scale

When measuring objects, there are two different types of systems you can use. You can use either the English system or the metric system. The English system is common in the United States, while a large portion of the rest of the world uses the metric system. Since there are two systems, there are different scales you can use to convert from metric to English or from English to Metric. Knowing how to use these scales allows you to quickly go between metric and English systems.

Instructions

1

Find the metric scale that applies to your conversion. For example, if you have centimeters, then you need a length conversion to inches. A conversion scale is available in the resources.

2

Find the proper conversion formula on the scale. In the example, 1 centimeter equals 0.39 inches.

3

Determine the number of units you have. In the example, you have 20 centimeters.

4

Multiply the number of units you have by the conversion factor. In the example, 20 centimeters times 0.39 inches equals 7.8 inches.