What is 81ft in Fathoms?

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What is 81 Feet (81ft) in Fathoms (ftm)?

What is 81ft in ftm? Convert 81 Feet (81ft) to Fathoms (ftm) and show formula, brief history on the units and quick maths for the conversion.

Enter Feet to convert to Fathoms


Quick Reference for Converting Feet to Fathoms

Formula
ftm = ft / 6
Quick Rough Maths
To get the Fathoms, divide the number of Feet by 6.0
Feet (ft) in 1 Fathom
There are 6 Feet in 1 Fathom
Fathoms (ftm) in 1 Foot
There are 0.17 Fathoms in 1 Foot

Unit Information

Foot
/fʊt/
Symbol: ft
Unit System: Imperial

What is the Foot?

The foot is a unit of length in the imperial unit system and uses the symbol ft.

One foot is exactly equal to 12 inches. It is also exactly equal to 0.3048m. One yard is comprised of three feet.

The foot is just behind the metre in terms of widespread use due to its previous popularity. The US is the only developed country that still uses the foot in preference to the metre.

The UK still uses feet to express human height more than metres.

Fathom
/ˈfað(ə)m/
Symbol: ftm
Unit System: Imperial

What is the Fathom?

The fathom is a unit of length in the imperial unit system and uses the symbol ftm.

One fathom is equal to 6 feet or 1.8288m.

The phrase fathom derives from an old English derivative of a Viking / Danish word "favn" meaning emracing a pair of arms or a pair of oustretched hands.

The fathom is mostly used in the nautical world to describe depths of water.


Conversion Tables for Feet (ft) to Fathoms (ftm)