Convert Feet to Fathoms
Convert Feet (ft) to Fathoms (ftm) instantly and accurately.
Conversion Formula
ftm = ft × 0.1666666667
About Feet
A foot (ft) is equal to 12 inches or 30.48 centimeters, originally based on the length of a human foot. It remains widely used in the United States and some other countries for measuring height, room dimensions, and distances. For reference, a standard door is about 6.5-7 feet tall, ceiling height in homes is typically 8-9 feet, and a basketball hoop stands 10 feet high. The foot is also used in aviation (altitude) and real estate (square footage).
About Fathoms
A fathom (ftm) is equal to 6 feet or 1.8288 meters, traditionally based on the span of a man's outstretched arms. This unit has been used for centuries in maritime navigation to measure water depth and rope or cable lengths. While largely replaced by meters in modern nautical charts, fathoms remain in use by sailors and in naval traditions. The Mariana Trench, Earth's deepest point, reaches about 6,000 fathoms. The term 'to fathom' meaning 'to understand' derives from this nautical unit.
Quick Reference Table
| Feet (ft) | Fathoms (ftm) |
|---|---|
| 1 ft | 0.166667 ftm |
| 2 ft | 0.333333 ftm |
| 5 ft | 0.833333 ftm |
| 10 ft | 1.66667 ftm |
| 25 ft | 4.16667 ftm |
| 50 ft | 8.33333 ftm |
| 100 ft | 16.6667 ftm |