# Customary and Metric

This page contains links to free math worksheets for Customary and Metric problems. Click one of the buttons below to view a worksheet and its answer key. You can also use the 'Worksheets' menu on the side of this page to find worksheets on other math topics.

## Centimeters to Inches

Converting between metric and customary unit lengths is all about converting centimeters to inches and back. These worksheets provider a solid base for the remaining sheets in this section.

## Customary to Metric Length

## Metric to Customary Length

Unit conversion worksheets for converting metric/SI unit lengths (meter base units) to customary units.

## Mixed Practice

Unit conversion worksheets for converting both directions between metric/SI unit lengths and customary units.

## Customary and Metric Conversion Worksheet

Once you have mastered converting between units in their own system of measurement, the next step is to learn how to convert between metric and customary units. The worksheets in this section introduce conversions between the two systems for mass, volume and distance measurements. Each of these conversions requires memorizing various constants.

### cm to inches

There are exactly 2.54 centimeters in one inch. This is the basic fact that needs to be memorized for any of the distance conversions between metric and customary measurement. To convert from cm to inches, we divide the number of centimeters by 2.54 to get the result. For example, to calculate 180 cm in feet and inches, we divide 180 by 2.54 to get approximately 70.86 inches. If we divide that value by 12, we get five wholes and a remainder of 10.86, which means 180 cm is equal to 5 ft 10.86 inches. We use a similar process to convert from inches to cm, employing multiplication by the same 2.54 constant. As an example, 6 ft 2 in converted to inches is 74 inches, and that value multiplied by 2.54 is 187.96 cm. The two groups group of worksheets on this page deal with the cm to inches conversion, inches to cm conversion, inches to meters, mm to inches and other similar conversions between the two systems of measurement. The worksheets are grouped with the conversions from metric to customary, customary to metric and a mixture of both types of practice problems.