How do I convert furlongs to fathoms?

Multiply the furlong value by 110. For example, 8 furlongs (1 mile) = 880 fathoms.

Are furlongs and fathoms historically related?

Both derive from the English foot. The furlong (660 feet) measured plowed fields. The fathom (6 feet) measured water depth. They are cousins in the foot-based family of units.

Furlongs to Fathoms (fur to ftm) Converter

1 fur = 110 ftm

1 Furlong equals 110 Fathoms (1 fur = 110 ftm). Convert Furlongs to Fathoms with formula, table, and examples.

One furlong equals exactly 110 fathoms. Since 1 furlong = 660 feet and 1 fathom = 6 feet, divide 660 by 6 to get 110. Both units come from the English foot-based measurement tradition but serve different domains: furlongs for land distance, fathoms for sea depth.

How to Convert Furlongs to Fathoms

ftm = fur × 110

Multiply the value in Furlongs by 110

Take your value in Furlongs
Multiply by 110
Read the result in Fathoms

Common Furlongs to Fathoms Conversions

Furlongs (fur)	Fathoms (ftm)	Status
0.1 fur	11 ftm
0.25 fur	27.5 ftm
0.5 fur	55 ftm
1 fur	110 ftm
2 fur	220 ftm
4 fur	440 ftm
5 fur	550 ftm
8 fur	880 ftm
10 fur	1,100 ftm
20 fur	2,200 ftm
50 fur	5,500 ftm
100 fur	11,000 ftm
500 fur	55,000 ftm

Good to Know About Furlongs to Fathoms Conversion

The furlong measured how far an ox could plow. The fathom measured how deep a sailor could sound. One is horizontal, the other vertical. Both emerged from practical English needs and share the foot as their common ancestor.

Furlongs to Fathoms: What You Need to Know

A furlong of distance equals 110 fathoms of depth. The Kentucky Derby (10 furlongs) spans 1,100 fathoms. The Mariana Trench at about 6,011 fathoms is about 54.6 furlongs deep. The clean 110:1 ratio exists because both units are exact multiples of the foot.

What is a Furlong? fur

Exactly 660 feet or one-eighth of a mile (201.168 m). Originally the length of a plowed furrow. Still used in horse racing.

Imperial horse racing historical

Learn more about Furlong →

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 →

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

Furlongs to Fathoms FAQ

One furlong equals exactly 110 fathoms. Since 1 furlong = 660 feet and 1 fathom = 6 feet, divide 660 by 6.
Multiply the furlong value by 110. For example, 8 furlongs (1 mile) = 880 fathoms.
Both derive from the English foot. The furlong (660 feet) measured plowed fields. The fathom (6 feet) measured water depth. They are cousins in the foot-based family of units.

Non-Frequently Asked Questions About Furlongs to Fathoms

Questions nobody should ask - but someone did.

Coastal cliffs are typically 50-200 feet or 8-33 fathoms. In furlongs, that is 0.076-0.303 furlongs. So a horse falling off a cliff would fall less than a third of a furlong before hitting water. This is not a recommended equestrian activity.
A furlong is about 110 fathoms. If the ocean were exactly 1 furlong deep, it would be about 201 meters - roughly the depth of the continental shelf edge. At this depth, sunlight barely reaches. A furlong is the same length whether horizontal (racing) or vertical (diving), but it feels very different.
Nuclear submarines can reach about 30-35 knots (50-57 feet per second). A furlong (660 feet) at 50 fps takes about 13.2 seconds - remarkably close to a horse's furlong time (about 12 seconds). Horses and submarines are in the same speed class over a furlong. Who knew.