Fathom to League Converter

Length Converter

31 units available

Decimals:

From

To

0.000379

1 ftm = 0.000379 lea

Formula:

lea = ftm × 0.0003787879

With your value: 1 ftm = 0.00037879 lea

How big is that?

Everyday references on a logarithmic scale, all expressed in fathom so you can sanity-check the result.

Credit card (long side) (1/21 your value)0.0468 ftm

A4 sheet (height) (1/6.2 your value)0.162 ftm

Adult stride (1/2.4 your value)0.410 ftm

Your value1.00 ftm

Standard door height (1.1× your value)1.09 ftm

London double-decker bus (6.0× your value)6.01 ftm

Other Fathom to League conversions

2 ftm to lea 3 ftm to lea 4 ftm to lea 5 ftm to lea 6 ftm to lea 7 ftm to lea 8 ftm to lea

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

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

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.

Fathom (ftm)

Length

Exact conversion

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

League (lea)

Length

Exact conversion

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 Fathom to League

To convert from Fathom (ftm) to League (lea), multiply the value by 0.0003787879.

Formula: lea = ftm × 0.0003787879

Reverse: ftm = lea × 2,640

Step-by-Step Example

Start with your value in Fathom. For example: 5 ftm
Multiply by the conversion factor: 5 x 0.0003787879
The result is: 0.001894 lea

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.

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.

Frequently Asked Questions

How many League are in 1 Fathom?

There are exactly 0.0003787879 League in 1 Fathom. This means the conversion factor from Fathom to League is 0.0003787879.

What is the formula to convert Fathom to League?

The formula to convert Fathom to League is: lea = ftm × 0.0003787879. For example, to convert 10 Fathom to League, you would multiply 10 by 0.0003787879.

What is a Fathom?