# Hands to Micrometers (hh to μm)

Source: https://www.unitconvertercalculator.com/length/hands-to-micrometers/

**1 hh = 101600 μm**

One hand equals exactly 101,600 micrometers. The hand (4 inches / 10.16 cm) measures horse height, while the micrometer measures cells and bacteria. About 5 orders of magnitude separate these scales.

## Formula

Convert Hands to Micrometers

## Conversion Table

| Hands (hh) | Micrometers (μm) |
|---|---|
| 0.001 hh | 101.6 μm |
| 0.01 hh | 1016 μm |
| 0.05 hh | 5080 μm |
| 0.1 hh | 10160 μm |
| 0.5 hh | 50800 μm |
| 1 hh | 101600 μm |
| 5 hh | 508000 μm |
| 10 hh | 1016000 μm |
| 14 hh | 1422400 μm |
| 17 hh | 1727200 μm |
| 50 hh | 5080000 μm |
| 100 hh | 10160000 μm |

## Units

### Hand (hh)

Exactly 4 inches (10.16 cm). The standard unit for measuring the height of horses, measured from the ground to the withers.

### Micrometer (μm)

One millionth of a meter, also called a micron. Used in biology for cell sizes, in engineering for surface finishes, and in manufacturing tolerances.

## Background

A hand is 101,600 micrometers. A red blood cell (7 micrometers) is 6.89 x 10-5 hands across. The cells in a horse's blood are measured in micrometers while the horse itself is measured in hands.

## Good to Know

A horse's red blood cells are about 5.5 micrometers across. The horse itself is about 16 hands (1,625,600 micrometers) tall. Same animal, measured at two scales 5 orders of magnitude apart.

## FAQ

### How many micrometers are in 1 hand?

One hand contains exactly 101,600 micrometers. Since 1 hand = 0.1016 m and 1 m = 1,000,000 micrometers.

### How do I convert hands to micrometers?

Multiply the hand value by 101,600.

### Is this conversion practical?

Not directly. Veterinary microscopy uses micrometers for tissue samples but hands for the animal they came from.

## Non-Frequently Asked Questions

### How many horse hairs thick is one hand?

A horsehair is about 75 micrometers in diameter. One hand is 101,600 micrometers. So one hand is about 1,355 horsehairs thick. Your horse is made of its own measuring units: a 16-hand horse stacked 1,355 horsehairs per hand = about 21,680 horsehairs tall. Biology measuring itself.

### What is the smallest thing a horse can see?

Horses have visual acuity of about 20/33. They can see objects of about 100-200 micrometers at arm's length (1 hand). That is about the width of a human hair. So a horse can see a hair at one hand distance. Below that, the horse's world goes blurry.

### Is horse dander measured in micrometers?

Yes. Horse dander (skin flakes that cause allergies) is about 5-20 micrometers. One hand contains about 5,080-20,320 dander particles laid side-by-side. The thing that makes some people sneeze around horses is 1/5,000 to 1/20,000 of a hand across. Allergies operate at the micrometer scale.

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## See Also

- [Micrometers to Hands](https://www.unitconvertercalculator.com/length/micrometers-to-hands/)