# Furlongs to Fathoms (fur to ftm)

Source: https://www.unitconvertercalculator.com/length/furlongs-to-fathoms/

**1 fur = 110 ftm**

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.

## Formula

Convert Furlongs to Fathoms

## Conversion Table

| Furlongs (fur) | Fathoms (ftm) |
|---|---|
| 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 | 1100 ftm |
| 20 fur | 2200 ftm |
| 50 fur | 5500 ftm |
| 100 fur | 11000 ftm |
| 500 fur | 55000 ftm |

## Units

### 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.

### 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.

## Background

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.

## Good to Know

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.

## FAQ

### How many fathoms are in 1 furlong?

One furlong equals exactly 110 fathoms. Since 1 furlong = 660 feet and 1 fathom = 6 feet, divide 660 by 6.

### 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.

## Non-Frequently Asked Questions

### If a horse fell off a cliff into the ocean, how many furlongs until it hit water?

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.

### Is a furlong of ocean deeper or longer?

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.

### Could a submarine race a furlong underwater?

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.

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## See Also

- [Fathoms to Furlongs](https://www.unitconvertercalculator.com/length/fathoms-to-furlongs/)