Customary Units
Customary system
The customary system of measurement is defined as a set of weights and measures used for measuring length, weight, capacity, and temperature. Based on the English system of measurement, it is also known as the U.S. Customary System.
Customary Units for Length
The customary units to measure length and distances in the customary system are inches, feet, yards, and miles.
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Customary Units for Measuring Length |
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Inches |
Feet |
Yards |
Miles |
We can use the given chart for conversion of one customary unit of length to another.
Example: Convert 5 foot to inches.
1 foot = 12 inches
5 foot = 12 × 5 = 60 inches
The table given below shows the relation between customary units and standard metric units.
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Customary Unit |
Customary Equivalent |
Standard Metric Equivalent |
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1 inch |
-- |
2.54 centimeters |
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1 foot |
12 inches |
0.3048 meters |
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1 yard |
3 feet |
0.9144 meters |
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1 mile |
1760 yards |
1.609 344 kilometers |
Customary Units for Weight
The U.S. customary units for measuring weight are ounces, pounds, and tons.
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Customary Units for Measuring Weight |
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Ounces |
Pound |
Ton |
We can convert the customary unit of weight by using the giving relations.
Example: How many ounces are there in 1 ton?
1 ton = 2000 pounds
1 pound = 16 ounces
So, 2000 pounds = 2000 × 16 = 32000 ounces
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Customary Unit |
Customary Equivalent |
Standard Metric Equivalent |
|
1 ounce |
-- |
28.349523125 grams |
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1 pound |
16 ounces |
453.59237 grams |
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1 ton |
2000 pounds |
907.18474 kilograms |
Customary Units for Capacity (Volume)
The U.S. customary capacity or volume measurement units are ounces, cups, pints, quarts, and gallons.
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Customary Units for Measuring Capacity (Volume) |
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| Fluid Ounce | Cup | Pint | Quart |
Gallon |
Example: Convert 3 quarts to cups.
1 quart = 2 pints
2 quarts = 6 pints
1 pint = 6 cups
6 pints = 6 × 6 = 12 cups
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Customary Unit |
Customary Equivalent |
Standard Metric Equivalent |
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1 fluid ounce |
2 tablespoons |
29.5735295625 milliliters |
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1 cup |
8 fluid ounces |
0236.5882365 milliliters |
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1 pint |
2 cups |
473.176473 milliliters |
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1 quart |
2 pints |
0.946352946 liters |
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1 gallon |
4 quarts |
3.785411784 liters |
Customary Units for Temperature
The U.S. customary measurement unit for temperature is °Fahrenheit.
1 °C = 33.8 °F
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Fun Facts
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