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The customary system is the system of measurement commonly used in the United States. This system of measurement contains units for length, capacity, and weight. For example, the inch is a unit of length, the ounce is a unit of weight, and the quart is a unit of volume. Examples of Units in the Customary System inch, ounce, and quart The table shows the relationship between units of each measure type in the customary system.
| Customary Units | ||
|---|---|---|
| Type | Unit | Equivalent Unit |
| Length | 1 foot (ft) | 12 inches (in.) |
| 1 yard (yd) | 3 feet | |
| 1 mile (mi) | 5280 feet | |
| Weight | 1 pound (lb) | 16 ounces (oz) |
| 1 ton (T) | 2000 pounds | |
| Volume | 1 cup (c) | 8 fluid ounces (fl oz) |
| 1 pint (pt) | 2 cups | |
| 1 quart (qt) | 2 pints | |
| 1 gallon (gal) | 4 quarts | |
Converting measures requires using the appropriate conversion factors. It is also possible to convert units in the customary system to units in the metric system and vice versa. This may require keeping in mind an extensive list of conversion factors.