Q:

# How do you convert 54 centimeters to inches?

A:

Converting centimeters to inches means that you are taking a length measured in metric units and converting it to imperial or English units. Knowing how to make this conversion is a helpful skill and it can be done with or without a calculator.

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1. Know the conversion rate

There are 2.54 centimeters (cm) in every 1 inch (in). The following equations assist in conversion: 2.54 cm = 1 in and 1 cm = 0.39 in because 1/2.54 = 0.39 This means that the same length would take more centimeters than it does inches.

2. Convert centimeters to inches

If you have 54 cm, you want to get rid of cm. To cancel a centimeter, divide by centimeters. Use the conversion equations to form a fraction expression, such as 0.39 in /1 cm. 54 cm * 0.39 in /1 cm = 54 * 0.39 in = 21.26 in Because 0.39 is almost 0.4, you can often use 0.4 or 2/5 to estimate the conversion.

Use benchmark values and measurements to make sure your answer makes sense. For example, 21.26 in is a little less than 2 feet and a little more than half of 40 in (which is about the number of inches in a meter). Also, 54 cm is a little more than half of a meter. Also, if you have a yardstick available, check to see that 54 cm and 21.26 in measure about the same distance.

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