# Fathoms to Furlongs (ftm to fur)

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

**1 ftm = 0.0090909090909091 fur**

One fathom equals exactly 1/110 of a furlong, or approximately 0.009091 furlongs. Since 1 furlong = 10 chains = 110 fathoms, the ratio is clean. The fathom measures sea depth while the furlong measures horse racing distances and agricultural land. Both are quintessentially English units now largely obsolete.

## Formula

Convert Fathoms to Furlongs

## Conversion Table

| Fathoms (ftm) | Furlongs (fur) |
|---|---|
| 1 ftm | 0.0090909090909091 fur |
| 5 ftm | 0.045454545454545 fur |
| 10 ftm | 0.090909090909091 fur |
| 50 ftm | 0.45454545454545 fur |
| 100 ftm | 0.90909090909091 fur |
| 110 ftm | 1 fur |
| 500 ftm | 4.5454545454545 fur |
| 1000 ftm | 9.0909090909091 fur |
| 5000 ftm | 45.454545454545 fur |
| 10000 ftm | 90.909090909091 fur |

## Units

### 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.

### 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.

## Background

A furlong contains exactly 110 fathoms. The Kentucky Derby (10 furlongs) is 1,100 fathoms. The Challenger Deep (about 6,011 fathoms) would be about 54.6 furlongs of vertical depth. Both units arose from the English measurement tradition but serve completely different environments.

## Good to Know

The fathom and furlong are both dying units. Fathoms are being replaced by meters on nautical charts. Furlongs survive only in horse racing. Their 110:1 ratio is a relic of the English foot-based system that once unified land and sea measurement.

## FAQ

### How many furlongs is 1 fathom?

One fathom equals exactly 1/110 of a furlong (about 0.009091 furlongs). There are exactly 110 fathoms in one furlong.

### How many fathoms are in 1 furlong?

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

### Are fathoms and furlongs related?

Only through the foot. The fathom (6 feet) and furlong (660 feet) are both defined in feet but serve entirely different purposes: depth at sea and distance on land.

## Non-Frequently Asked Questions

### How many fathoms deep could a horse race underwater?

A furlong is about 110 fathoms. The deepest horse-safe wading is maybe 4 fathoms (24 feet). So a horse could race about 3.6% of a furlong underwater before swimming, and 0% of a furlong at racing speed. Submarine horse racing remains impractical.

### Is a furlong just 110 fathoms laid sideways?

A furlong (201.17 m) is about 110 fathoms (1 fathom = 1.8288 m). One is horizontal (race distance), the other is vertical (ocean depth). Same length, perpendicular applications. Measurement geometry at its finest.

### If the ocean were a furlong deep, would that be shallow?

A furlong is about 110 fathoms or 201 meters. The average ocean depth is about 2,000 fathoms. So a furlong-deep ocean would be about 18 times shallower than real. It would be roughly the depth of the continental shelf. Fishable, but not impressive.

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## See Also

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