How many miles is 1 fathom?

One fathom equals exactly 1/880 of a mile (approximately 0.001136 miles). There are exactly 880 fathoms in one statute mile.

How many fathoms are in 1 mile?

One mile contains exactly 880 fathoms. Since 1 mile = 5,280 feet and 1 fathom = 6 feet, divide 5,280 by 6.

How deep is the ocean in miles?

The deepest point (Challenger Deep) is about 6.83 miles (6,011 fathoms / 10.99 km). Average ocean depth is about 2.27 miles (2,000 fathoms / 3.66 km).

Fathoms to Miles (ftm to mi) Converter

1 ftm = 0.0011 mi

1 Fathom equals 0.0011 Miles (1 ftm = 0.0011 mi). Convert Fathoms to Miles with formula, table, and examples.

One fathom equals exactly 1/880 of a mile, or approximately 0.001136 miles. Since 1 mile = 5,280 feet and 1 fathom = 6 feet, there are exactly 880 fathoms in a mile. This clean ratio connects the maritime depth unit with the American road distance unit.

How to Convert Fathoms to Miles

mi = ftm ÷ 880

Divide the value in Fathoms by 880

Take your value in Fathoms
Divide by 880
Read the result in Miles

Common Fathoms to Miles Conversions

Fathoms (ftm)	Miles (mi)	Status
1 ftm	0.0011 mi
5 ftm	0.0057 mi
10 ftm	0.0114 mi
50 ftm	0.0568 mi
100 ftm	0.1136 mi
200 ftm	0.2273 mi
500 ftm	0.5682 mi
880 ftm	1 mi
1,000 ftm	1.1364 mi
5,000 ftm	5.6818 mi
6,000 ftm	6.8182 mi
10,000 ftm	11.3636 mi

Good to Know About Fathoms to Miles Conversion

Saying 'the ocean is nearly 7 miles deep' makes the Mariana Trench relatable for Americans who think in miles. That is deeper than Mount Everest is tall (5.5 miles), a comparison often used in science education.

Fathoms to Miles: What You Need to Know

The ocean is about 6.8 miles deep at its maximum (Challenger Deep at 6,011 fathoms). Average ocean depth is about 2.27 miles (2,000 fathoms). A submarine at 200 fathoms is about 0.227 miles below the surface. Expressing ocean depth in miles helps Americans relate to the scale of the deep ocean.

What is a Fathom? ftm

Exactly 6 feet (1.8288 m). Traditionally used to measure water depth in nautical contexts. Originally based on the span of outstretched arms.

Imperial water depth nautical marine charts

Learn more about Fathom →

What is a Mile? mi

An imperial unit of length equal to 5,280 feet or approximately 1.609 kilometers. The standard unit for road distances in the US and UK.

Imperial Us-customary road distances (US/UK) running aviation

Learn more about Mile →

Going the other way? Use our Miles to Fathoms converter.

Fathoms to Miles FAQ

One fathom equals exactly 1/880 of a mile (approximately 0.001136 miles). There are exactly 880 fathoms in one statute mile.
One mile contains exactly 880 fathoms. Since 1 mile = 5,280 feet and 1 fathom = 6 feet, divide 5,280 by 6.
The deepest point (Challenger Deep) is about 6.83 miles (6,011 fathoms / 10.99 km). Average ocean depth is about 2.27 miles (2,000 fathoms / 3.66 km).

Non-Frequently Asked Questions About Fathoms to Miles

Questions nobody should ask - but someone did.

The average ocean depth is about 2,000 fathoms (2.28 miles). The deepest point (Mariana Trench) is about 6,011 fathoms (6.86 miles). So yes, the ocean is many miles deep. A mile of water overhead exerts about 166 atmospheres of pressure.
The deepest old-fashioned soundings in the 1870s reached about 5,000 fathoms (5.68 miles) of wire. HMS Challenger lowered piano wire nearly 6 miles into the Pacific. Each sounding took hours and sometimes the wire broke. Modern sonar takes seconds.
A mile is exactly 880 fathoms. At highway speed (60 mph), you would descend 880 fathoms in one minute. At that rate, you would hit the bottom of the Mariana Trench in about 6.8 minutes. Your car would be crushed at about 500 fathoms. This is not a recommended route.