# Furlongs to Thou (fur to thou)

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

**1 fur = 7920000 thou**

One furlong equals exactly 7,920,000 thou (mils). Since 1 furlong = 7,920 inches and 1 inch = 1,000 thou, multiply 7,920 by 1,000. The furlong measures racing and agricultural distances while the thou measures coatings, wires, and PCB traces. They never overlap.

## Formula

Convert Furlongs to Thou

## Conversion Table

| Furlongs (fur) | Thou (thou) |
|---|---|
| 1.0E-7 fur | 0.792 thou |
| 1.0E-6 fur | 7.92 thou |
| 1.0E-5 fur | 79.2 thou |
| 0.0001 fur | 792 thou |
| 0.001 fur | 7920 thou |
| 0.01 fur | 79200 thou |
| 0.1 fur | 792000 thou |
| 0.5 fur | 3960000 thou |
| 1 fur | 7920000 thou |
| 5 fur | 39600000 thou |
| 10 fur | 79200000 thou |

## 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.

### 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.

## Background

A furlong is 7.92 million thou. A PCB copper trace at 6 thou is 7.58 x 10-7 furlongs wide. These units serve completely unrelated fields and this conversion exists only for mathematical completeness.

## Good to Know

The thou measures the thickness of paint on a car. The furlong measures the distance a horse races. Both are measured with precision, just at scales 7 million times apart.

## FAQ

### How many thou are in 1 furlong?

One furlong contains exactly 7,920,000 thou. Since 1 furlong = 7,920 inches and 1 inch = 1,000 thou.

### How do I convert furlongs to thou?

Multiply furlongs by 7,920,000.

### Is this conversion practical?

No. Furlongs and thou belong to completely separate measurement domains.

## Non-Frequently Asked Questions

### How thick is racing turf in furlongs?

Racing turf grass is about 1-3 inches = 1,000-3,000 thou thick. A furlong is 7,920,000 thou. So the grass is about 0.013-0.038% of a furlong tall. The horse runs 7.9 million thou per furlong but only interacts with the top 1,000-3,000 thou of ground.

### Is a horseshoe nail measured in thou?

Horseshoe nails are about 50-70 thou (1.27-1.78 mm) in diameter. A furlong is 7,920,000 thou. The nail that keeps the shoe on the horse is about 0.0006-0.0009% of the distance the horse runs per furlong. Small hardware, big results.

### How many thou of paint is on a furlong marker?

A painted furlong post has about 3-5 layers of exterior paint at 3-4 thou each = 9-20 thou total. The post marks 7,920,000 thou of distance using 20 thou of paint. That is a compression ratio of 396,000:1. Markers are efficient communicators.

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## See Also

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