Foot
A foot (plural: feet) is a unit of length commonly used in the United States, the United Kingdom, and some other countries. One foot equals 12 inches or about 0.3048 meters. Feet are often used to measure height, room dimensions, and short distances. For example, a person might be 5 feet 8 inches tall. The abbreviation for foot is "ft". Although many countries use the metric system, feet remain popular in daily life and construction in countries using the imperial system.
Fathom (US Survey)
The fathom (US survey) is a unit of length used in U.S. surveying and nautical contexts, defined as exactly 6 US survey feet. Since one US survey foot is approximately 0.3048006096 meters, the US survey fathom measures about 1.828804 meters.
Like the international fathom, it is primarily used to measure water depths and underwater distances in marine navigation and surveying.
Key details:
Though the difference between the US survey fathom and the international fathom is very small, the US survey units are being phased out in favor of international standards, but they still appear in some legal and historical surveying documents.
No conversions available for length.