# Thou to Furlongs (thou to fur)

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

**1 thou = 1.2626262626263E-7 fur**

One thou equals approximately 3.156 x 10-8 furlongs. A furlong (7,920,000 thou) contains about 7.92 million thou. The thou measures precision engineering; the furlong measures horse racing. Both belong to the imperial family but never attend the same events.

## Formula

Convert Thou to Furlongs

## Conversion Table

| Thou (thou) | Furlongs (fur) |
|---|---|
| 100000 thou | 0.012626262626263 fur |
| 500000 thou | 0.063131313131313 fur |
| 1000000 thou | 0.12626262626263 fur |
| 5000000 thou | 0.63131313131313 fur |
| 7920000 thou | 1 fur |
| 10000000 thou | 1.2626262626263 fur |
| 50000000 thou | 6.3131313131313 fur |

## Units

### Thou (thou)

One thousandth of an inch (0.0254 mm). Also called a mil in the US. Used in engineering, manufacturing, and for measuring thin materials like plastic film.

### 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 is 7.92 million thou. A horseshoe nail (about 2,000 thou) is 0.000253 furlongs. The hardware that keeps a horse running (thou) serves the distance the horse races (furlongs).

## Good to Know

A horseshoe nail (2,000 thou) holds the shoe that runs the furlongs. If the nail fails at thou-level, the race fails at furlong-level. Thou-scale hardware failure cascades into furlong-scale competitive disaster. The proverb 'for want of a nail' is a thou-to-furlong failure cascade.

## FAQ

### How many furlongs is 1 thou?

One thou equals approximately 3.156 x 10-8 furlongs.

### How many thou are in 1 furlong?

One furlong contains approximately 7,920,000 thou.

### Is this conversion used?

Never directly. But horseshoe dimensions (thou) and race distances (furlongs) coexist in equestrian sport.

## Non-Frequently Asked Questions

### How many thou of horseshoe wear per furlong of racing?

A horseshoe wears about 5-10 thou per mile of hard surface. A furlong is 1/8 mile, so about 0.6-1.25 thou per furlong. Over a 10-furlong Derby, the shoe loses about 6-12 thou. Winning the Kentucky Derby costs your horse about 10 thou of iron. Cheap at the price.

### How precise is a photo-finish camera in thou?

Modern photo-finish cameras resolve to about 40 thou (1 mm) at the finish line. Over a 7,920,000-thou furlong, that is precision of about 5 parts per million. Horse racing achieves manufacturing-grade measurement accuracy on a muddy track. Impressive.

### How many thou long is a starting gate?

A horse starting gate stall is about 48 inches (48,000 thou) wide and 96 inches (96,000 thou) deep. The gate mechanism must release all stalls within about 50 thou of simultaneous. Gate engineering is thou-level precision for furlong-level competition.

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## See Also

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