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Length and Area

fttoftm

Convert feet (ft) to fathoms (ftm).

Factor1 ft = 0.1666667 ftm

Converter

ft

Accepts numbers or expressions, e.g. 150 + 14.7

Result
10ftm

Rendered to 6 significant figures.

Formula

Formula
ftm = ft × 0.1666667

Multiply any value in feet by 0.1666667 to obtain the value in fathoms.

Worked example

Convert 60 ft to ftm.

  1. 01Start with 60 ft.
  2. 02Multiply by the conversion factor: 60 × 0.1666667 = 10 ftm.
Result60 ft = 10 ftm

Conversion table

ftftm
10.16667
20.33333
50.83333
101.6667
203.3333
508.3333
10016.667
20033.333
50083.333
1000166.67

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft to ftm?
1 ft equals 0.1666667 ftm. To convert, multiply the value in feet by 0.1666667.
How do I convert 1 ft to ftm?
1 ft = 0.166667 ftm. For any value, multiply by 0.1666667.
How do I convert ftm back to ft?
Divide by the same factor — or equivalently, multiply by 6. So 1 ftm = 6 ft.
When would I need to convert foot to fathom?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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