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Feet to fathoms

1 foot in fathoms
1 ft = 0.16667 ftm
ftm = ft × 1/6

To convert feet to fathoms, multiply by 0.1666666667. The table below gives the values people look up most often, and the converter works for any number.

Feet to fathoms table

Common foot values converted to fathoms.
Feet Fathoms
1 ft 0.16667
2 ft 0.33333
3 ft 0.5
4 ft 0.66667
5 ft 0.83333
10 ft 1.666667
15 ft 2.5
20 ft 3.333333
25 ft 4.166667
30 ft 5
40 ft 6.666667
50 ft 8.333333
75 ft 12.5
100 ft 16.66667
250 ft 41.66667
500 ft 83.33333
1,000 ft 166.6667

How the conversion works

The relationship is ftm = ft × 1/6. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Foot: Plural is "feet".

Common questions

How many fathoms are in one foot?
One foot equals 0.16667 fathoms. ftm = ft × 1/6.
How do you convert feet to fathoms?
Use ftm = ft × 1/6. So 10 ft is 1.666667 ftm.
How many feet are in one fathom?
One fathom equals 6 feet, which is the reverse of the conversion above.
Is there more than one kind of foot?
Plural is "feet".

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked