Convert Foot to Micrometer

One ft equals 304,800 µm. This converter allows you to easily convert between Foot and Micrometer in real time.

Formula

ft × 304,800 = µm

Example: 1 ft = 304,800 µm

What is Foot?

The foot is a unit of length in the imperial and US customary systems, equal to exactly 0.3048 meters or 12 inches. Its name comes from the length of a human foot, and it has been used as a measure since ancient civilizations. In the United States, height is commonly expressed in feet and inches (for example, "5 feet 10 inches"), and real estate listings use square feet for floor area. In aviation worldwide, altitude is measured in feet, regardless of whether the country otherwise uses the metric system.

What is Micrometer?

The micrometer, formerly known as the micron, is one-millionth of a meter or one-thousandth of a millimeter. It is essential in biology for describing cell sizes—a red blood cell is about 7 µm in diameter, and typical bacteria measure around 1 to 5 µm. In semiconductor manufacturing, transistor gate lengths and circuit features are measured in micrometers or smaller. Optical fiber core diameters, thin-film coatings, and particle sizes in air-quality studies are also expressed in micrometers.