League to Fathom Converter
Convert League (lea) to Fathom (ftm) instantly. 1 lea = 2,640 ftm.
Length Converter
31 units available
1 lea = 2,640 ftm
Formula:
ftm = lea × 2,640With your value: 1 lea = 2,640 ftm
How big is that?
Everyday references on a logarithmic scale, all expressed in league so you can sanity-check the result.
Other League to Fathom conversions
League to Fathom Conversion Table
| League (lea) | Fathom (ftm) |
|---|---|
| 0.5 | 1,320 |
| 1 | 2,640 |
| 2 | 5,280 |
| 5 | 13,200 |
| 10 | 26,400 |
| 15 | 39,600 |
| 20 | 52,800 |
| 25 | 66,000 |
| 50 | 132,000 |
| 100 | 264,000 |
| 250 | 660,000 |
| 500 | 1,320,000 |
| 1000 | 2,640,000 |
Fathom to League Conversion Table
| Fathom (ftm) | League (lea) |
|---|---|
| 0.5 | 0.000189 |
| 1 | 0.000379 |
| 2 | 0.000758 |
| 5 | 0.001894 |
| 10 | 0.003788 |
| 15 | 0.005682 |
| 20 | 0.007576 |
| 25 | 0.00947 |
| 50 | 0.018939 |
| 100 | 0.037879 |
| 250 | 0.094697 |
| 500 | 0.189394 |
| 1000 | 0.378788 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
League (lea)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Fathom (ftm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert League to Fathom
To convert from League (lea) to Fathom (ftm), multiply the value by 2,640.
Formula: ftm = lea × 2,640
Reverse: lea = ftm × 0.0003787879
Step-by-Step Example
- Start with your value in League. For example: 5 lea
- Multiply by the conversion factor: 5 x 2,640
- The result is: 13,200 ftm
About League
The league (lea) is a unit of distance and length. One league equals 4828.032 metres. UnitConvertLab converts it against every other length unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: length calculations, engineering and science, education.
About Fathom
The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.
Fun Fact: The word comes from the Old English "fæðm", the span of a man's outstretched arms.
Common uses: sounding depth, nautical charts, diving.
Frequently Asked Questions
How many Fathom are in 1 League?
There are exactly 2,640 Fathom in 1 League. This means the conversion factor from League to Fathom is 2,640.
What is the formula to convert League to Fathom?
The formula to convert League to Fathom is: ftm = lea × 2,640. For example, to convert 10 League to Fathom, you would multiply 10 by 2,640.
What is a League?
The league (lea) is a unit of distance and length. One league equals 4828.032 metres. UnitConvertLab converts it against every other length unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Fathom?
The fathom equals 6 feet (1.8288 m) and is the traditional unit for water depth on nautical charts.
What are the common uses of League?
The League is commonly used in length calculations, engineering and science, education.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). League to Fathom converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/league-to-fathom