How to Convert Metric Units to English Units

Written by brian baer
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How to Convert Metric Units to English Units
The metric system was introduced in France. (Jupiterimages/Photos.com/Getty Images)

The metric system was introduced in France in the 1790s in an effort to standardise units of measurement around the world. Today the metric system of measurements is widely used and accepted, but conversion of metric units to the traditional English units is still required. In the metric system, the standard units of measurement are meter (length), gram (weight/mass) and litre (volume). The multiple corresponding English units of measurements include the foot (length), ounce (weight/mass) and gallon (volume).

Skill level:
Moderately Easy

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Things you need

  • Calculator
  • Conversion chart

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Instructions

  1. 1

    Convert the metric unit of length (meter) to the English unit of length (foot). Use a conversion chart to determine that one meter equals 3.28 feet. Multiple the number of meters by the conversion equivalent of feet using a calculator. For example, 15 meters is equal to 49.2 feet (15 x 3.28 = 49.2).

  2. 2

    Convert the metric unit of mass (gram) to the English unit of mass (ounce). Use the conversion chart to determine that 1g is equivalent to 1gr. Multiple the number of grams by the conversion equivalent of ounces using the calculator. For example, 250g is equal to 250189gr. (250 x 0.0353 = 8.825).

  3. 3

    Convert the metric unit of volume (litre) to the English unit of volume (gallon). Use the conversion chart to determine that one litre is equivalent to 0.264 gallons. Multiple the number of litres by the conversion equivalent of gallons using the calculator. For example, 1,500 litres is equal to 396 gallons (1,500 x 0.264 = 396).

  4. 4

    Convert the metric unit of temperature (Celsius) to the English unit of temperature (Fahrenheit). This conversion can be done using a calculator and the formula F = C x 1.8 + 32 where F is the temperature in Fahrenheit degrees and C is the temperature in Celsius degrees. For instance, 25 degrees Celsius is 25 degrees Celsius (25 x 1.8 + 32 = 77).

Tips and warnings

  • There are many different English units that correspond to the metric equivalents, such as cubic foot (volume), pound (weight/mass) and mile (length/distance). Also, the metric system is set up in units of tens, hundreds and thousands with consistent prefixes. For instance, a kilometre is 1,000 meters ("kilo-" meaning 1,000).

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