Fathoms to Millimeters converter

To convert fathoms to millimeters, enter the value in the first field. The result in millimeters is calculated automatically using the exact conversion factor.

1 ftm = 1828.8 mm
1 mm ≈ 0.000546806649169 ftm

Formula: mm = ftm × 1828.8
ftm ≈ mm × 0.000546806649169

Definitions: 1 ftm = 6 ft; 1 mm = 0.001 m

The fathom is 6 feet (1.8288 meters). It is a traditional nautical unit for water depth and rope length, originally the span of a man's outstretched arms, and modern charts mostly use meters instead.

The millimeter (mm) is one thousandth of a meter. It is the standard unit for small dimensions in engineering drawings, machining and manufacturing, and for measuring rainfall depth.

See the conversion table with commonly used values, handy for quick reference or study.