Fathoms to Nautical Miles (ftm to nmi) Converter
1 Fathom equals 0.001 Nautical Miles (1 ftm = 0.001 nmi). Convert Fathoms to Nautical Miles with formula, table, and examples.
One fathom equals approximately 0.000988 nautical miles, or about 1/1,012 of a nautical mile. A nautical mile (1,852 m) contains about 1,012.7 fathoms. Both units are maritime, but they measure different things: fathoms measure depth vertically, nautical miles measure distance horizontally.
How to Convert Fathoms to Nautical Miles
- Take your value in Fathoms
- Multiply by 0.000987473
- Read the result in Nautical Miles
Good to Know About Fathoms to Nautical Miles Conversion
On a nautical chart, fathoms run vertically (depth soundings) while nautical miles run horizontally (distance scales). The two units share the same sheet of paper but measure perpendicular dimensions. This is the only place where both units naturally coexist.
Fathoms to Nautical Miles: What You Need to Know
About 1,013 fathoms make one nautical mile. The Challenger Deep at 6,011 fathoms is about 5.93 nautical miles deep. A shipping channel at 10 fathoms is about 0.0099 nautical miles deep. Both units live in the same maritime world but on perpendicular axes: depth vs. distance.
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.
Learn more about Fathom →What is a Nautical Mile? nmi
Exactly 1852 meters by international agreement. Based on one minute of arc of latitude at the Earth's surface. The standard unit for maritime and air navigation.
Learn more about Nautical Mile →Going the other way? Use our Nautical Miles to Fathoms converter.
Fathoms to Nautical Miles FAQ
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One fathom equals approximately 0.000988 nautical miles (about 1/1,013 of a nautical mile). Since 1 fathom = 1.8288 m and 1 NM = 1,852 m.
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One nautical mile contains approximately 1,012.7 fathoms. Since 1 NM = 1,852 m and 1 fathom = 1.8288 m, divide 1,852 by 1.8288.
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Yes, but differently. Fathoms measure depth (vertical). Nautical miles measure distance (horizontal). A chart might show '20 fathoms depth, 5 NM from shore.' Both are essential maritime units serving different purposes.
Non-Frequently Asked Questions About Fathoms to Nautical Miles
Questions nobody should ask - but someone did.
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Fathoms measure how deep (vertical). Nautical miles measure how far (horizontal). A ship sailing 100 nautical miles over 10 fathoms of water has traveled 100 NM horizontally and 0 NM vertically. Different axes, different units. Perfectly logical, thoroughly confusing.
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One nautical mile is about 1,013.3 fathoms. If you could sink straight down at 1 NM, you would be at 1,013 fathoms - about 1,852 meters. That is roughly the depth of the continental slope. Serious diving territory.
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The Pacific Ocean is about 9,600 NM wide and about 5.95 NM deep (at the Mariana Trench). So it is about 1,613 times wider than it is deep. The ocean is basically a very thin, very wide sheet of water when measured in the same unit.
Related Articles About Fathoms to Nautical Miles
Need the reverse? Use our Nautical Miles to Fathoms converter. See all Length & Distance converters.