UnitConvConvert
Length

Convert fathoms to feet

1 ftm=6ft

Use the converter below to change any fathoms value into feet instantly — with formula, conversion table, and real-world examples.

6

Conversion formula

Forward
feet = fathoms × 6
Reverse
fathoms = feet × 0.1667

Example: 10 ftm × 6 = 60 ft.

About both units

From

Fathom

ftm

The fathom equals exactly 6 feet or 1.8288 meters. It is the traditional marine unit for water depth, used on older nautical charts and in recreational sailing. Modern charts mark depths in metres, but fathoms still appear in maritime literature and older US charts.

Real-world: A "mark twain" reading — made famous by the Mississippi riverboats — meant 2 fathoms (3.66 m) of water, the minimum safe depth.
Read full fathom reference →
To

Foot

ft

The foot equals 30.48 centimeters exactly and is one of the oldest length units in human history. It is the international aviation standard for altitude — commercial airliners cruise at 35,000 feet. In the US, building dimensions, human height and elevation are all expressed in feet. 1 foot = 12 inches.

Real-world: Airliners cruise at 35,000 ft (10.7 km). Mount Everest is 29,032 ft (8,849 m). A standard US ceiling is 8 ft (2.44 m).
Read full foot reference →

Fathom to Foot conversion table

Common fathoms to feet values for quick reference.

Fathom (ftm)Foot (ft)
1 ftm6 ft
5 ftm30 ft
10 ftm60 ft
25 ftm150 ft
50 ftm300 ft
100 ftm600 ft
250 ftm1,500 ft
500 ftm3,000 ft
1,000 ftm6,000 ft
5,000 ftm30,000 ft

Tips & common mistakes

Quick tips

  • 1 fathom = 2 yards = 6 feet = 1.8288 m.
  • Modern charts use metres internationally; fathoms are mostly historical.
  • The word "fathom" comes from Old English for "outstretched arms" — originally the span of an adult's arms.

Avoid these

  • Reading a modern chart that uses metres as if it were fathoms — a factor-of-1.83 depth error.
  • Confusing fathoms with feet on mixed-unit charts.
  • Assuming all US charts still use fathoms — NOAA has largely migrated to metres.

Frequently asked questions

How many feet in a fathom?
One fathom equals 6 feet.
How do I convert fathoms to feet?
Multiply the fathom value by 6 to get the equivalent in feet.
What is 100 fathoms in feet?
100 fathoms equals 600 feet.
Is a fathom bigger than a foot?
Yes. 1 fathom equals 6 feet, so one fathom is larger.
How to convert fathoms to feet without a calculator?
Multiply by 6 for a quick estimate; use a calculator for precise results.

Related length conversions

📊 See full comparison matrix →

More from Fathom

ftm → m
1 = 1.8288 m
ftm → km
1 = 0.001829 km
ftm → cm
1 = 182.88 cm
ftm → mm
1 = 1,828.8 mm
ftm → mi
1 = 0.001136 mi
ftm → yd
1 = 2 yd
ftm → in
1 = 72 in
ftm → nmi
1 = 0.0009875 nmi

More to Foot

m → ft
1 = 3.28084 ft
km → ft
1 = 3,280.84 ft
cm → ft
1 = 0.03281 ft
mm → ft
1 = 0.003281 ft
mi → ft
1 = 5,280 ft
yd → ft
1 = 3 ft
in → ft
1 = 0.08333 ft
nmi → ft
1 = 6,076.12 ft

Conversions in other categories

WeightKilogram → PoundTemperatureCelsius → FahrenheitVolumeLiter → US GallonAreaSquare Meter → Square FootSpeedKilometer per Hour → Mile per HourEnergyKilojoule → KilocaloriePressureBar → Pound per Square InchPowerKilowatt → Mechanical Horsepower