How many inches are there in one foot?

One foot is defined to be exactly 12 inches in length. This is a standard measurement in both imperial and customary systems of measurement commonly used in the United States. The foot has been a fundamental unit for measuring length, and it's divided into 12 inches, making it convenient for various applications, such as construction, fabric measurement, and when dealing with height. Understanding the basic relationship of feet to inches is essential for accurate conversions and practical use in everyday measurements.