Customary Units
Customary systemThe customary system of measurement is defined as a phối of weights & measures used for measuring length, weight, capacity, and temperature. Based on the English system of measurement, is also known as the U.S. Customary System.
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Customary Units for Length
The customary units to lớn measure length and distances in the customary system are inches, feet, yards, và miles.
Customary Units for Measuring Length
Inches | Feet | Yards | Miles |
We can use the given chart for the conversion of one customary unit of length to another.

Example: Convert 5 feet to lớn inches.
1 foot = 12 inches
5 foot = 12 × 5 = 60 inches
The table given below shows the relation between customary units & standard metric units.
Customary Unit | Customary Equivalent | Standard Metric Equivalent |
1 inch | — | 2.54 centimeters |
1 foot | 12 inches | 0.3048 meters |
1 yard | 3 feet | 0.9144 meters |
1 mile | 1760 yards | 1.609 344 kilometers |
Customary Units for Weight
The U.S. Customary units for measuring weight are ounces, pounds, & tons.
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
Customary Unit | Customary Equivalent | Standard Metric Equivalent |
1 ounce | — | 28.349523125 grams |
1 pound | 16 ounces | 453.59237 grams |
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, và gallons.
Customary Units for Measuring Capacity (Volume)
Fluid Ounce | Cup | Pint | Quart | Gallon |
Example: Convert 3 quarts khổng lồ cups.
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1 quart = 2 pints
3 quarts = 6 pints
1 pint = 2 cups
6 pints = 6 × 2 = 12 cups
Customary Unit | Customary Equivalent | Standard Metric Equivalent |
1 fluid ounce | 2 tablespoons | 29.5735295625 milliliters |
1 cup | 8 fluid ounces | 236.5882365 milliliters |
1 pint | 2 cups | 473.176473 milliliters |
1 quart | 2 pints | 0.946352946 liters |
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
Fun Facts Customary system is called the International System of Units or the Modern Metric System. |