Convert feet to mm

Foot

التعريف
A foot (symbol: ft) is a traditional length unit in the Imperial and U.S. customary systems. Since 1959, it has been standardized as exactly 0.3048 meters. Each foot comprises 12 inches, and three feet make one yard.

History & Origin
Across ancient cultures—from Greek and Roman to medieval English and Chinese—the length of a “foot” varied widely (roughly 250 mm to 335 mm), often based on human body parts. To unify these disparate measures, an international agreement in 1959 fixed the foot at 0.3048 m.

الاستخدام الحديث
Feet are still the primary unit for everyday measurements in the United States, Canada, and the United Kingdom. You’ll encounter feet when measuring personal height, room dimensions, sports fields, and aviation altitudes.

Millimeter

التعريف
A millimeter (symbol: mm) is an SI-derived unit of length equal to one-thousandth of a meter (0.001 m). It corresponds to the distance light travels in 1⁄299 792 458 000 of a second.

History & Origin
The prefix milli- (Latin mille, “thousand”) denotes a factor of 10⁻³. While the meter’s realization has evolved—from a physical prototype bar to a light-based constant—the link 1 mm = 0.001 m has remained constant.

الاستخدام الحديث
Millimeters are crucial for high-precision tasks: engineering tolerances, technical drawings, machining parts, and any application where sub-centimeter accuracy is required.

Foot → Millimeter Conversion Table

كيفية التحويل

• 1 ft = 304.8 mm

• 1 mm ≈ 0.00328084 ft

مثال على ذلك

Convert 15 ft to millimeters:

15 ft × 304.8 mm/ft = 4572 mm