Marine & NauticalFathoms to Feet

Fathoms to Feet

Methodology·How We Verify

Snapshot

1 fathom equals 6 feet.

Reference basis: This converter uses the fixed marine length relationship 1 fathom = 6 ft.
Example: For 10 fathoms, the result is 60 feet with the same exact factor.

Interactive conversion

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Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

6 Feet (ft)

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API and AI agent access

Fathoms to Feet.

Machine-readable identifiers

Conversion family: marine
Source unit: fathoms
Target unit: feet

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "marine",
  "value": 1,
  "from": "fathoms",
  "to": "feet"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "marine",
    "value": 1,
    "from": "fathoms",
    "to": "feet",
    "result": {
      "raw": 6,
      "display": "6"
    },
    "canonicalPath": "/marine/fathoms-to-feet/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

One fathom equals exactly 6 feet. In marine charts and depth soundings, a water depth of one fathom is therefore six feet; the same fixed relationship gives 2 fathoms as 12 feet, 10 fathoms as 60 feet, and 20 fathoms as 120 feet.

Use this converter for chart depths, draft measurements, and nautical distance references. Because a fathom is fixed at six feet, the conversion is exact.

Method & Marine Length Basis

Unit basis: one fathom is treated as exactly 6 feet.
Applied factor: feet = fathoms x 6.
Consistency rule: snapshot, calculator, FAQ, and common values all use the same fathom-to-foot factor.

Common Conversion Values

Fathom (ftm)	Feet (ft)
1	6
2	12
5	30
10	60
20	120
50	300
100	600

Questions & answers

Frequently Asked Questions

How deep is one fathom in feet?

When fathom is used for water depth, one fathom is exactly 6 feet.

Is fathoms to feet exact?

Yes. This converter uses the fixed relationship 1 fathom = 6 feet.