Convert Foot to Millimeter

One ft equals 304.8 mm. This converter allows you to easily convert between Foot and Millimeter in real time.

Formula

ft × 304.8 = mm

Example: 1 ft = 304.8 mm

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 Millimeter?

The millimeter is one-thousandth of a meter and is used wherever high precision is required. Engineers specify screw sizes, circuit board dimensions, and mechanical tolerances in millimeters. In meteorology, rainfall is measured in millimeters, with weather reports stating amounts like "20 mm of rain expected today." Paper thickness, smartphone dimensions, and dental measurements are also commonly expressed in millimeters.