U.S. Customary Units are a system of measurement commonly used in the United States. This system includes units for length, weight, and volume, such as inches, feet, pounds, and gallons. It is based on historical measurements and is distinct from the metric system used in most other countries. The U.S. Customary Units are often used in everyday activities, such as cooking, construction, and travel. For example, recipes may call for cups and teaspoons, while road signs display distances in miles. Understanding these units is essential for effective communication and practical tasks in the U.S.