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The diameter of a human hair does not have a standard value since different people have different hair structures. Your genetic makeup can cause the width of your hair to differ from that of other people. Hair color is also a big factor. Black hair is thicker than is red hair. The weather can also affect the diameter of a hair strand. As the weather gets warmer, the diameter of body hair increases. Age is another factor. Babies and young children have finer hair than adults. As a person grows up, their hair becomes thicker and stronger. Another factor is that, the closer to the root of the hair, the thicker a strand of hair would be.

In my research, I have found the diameter of human hair to range from 17 to 181 µm (millionths of a meter)

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Wiki User

12y ago

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It can vary tremendously depending on race, and continent (Africans' average hair thickness is higher than Europeans', for example). It also depends if you talk about body hair or head hair. Hair from a human head is normally between .04 and .25 millimeters, averaging normally .1. Body hair depends on gender and even within individuals of the same gender and race it can be very different from an individual to another.

The Thickest Hair in the human body belongs to a man's moustache. Usually hair is not completely tubular. Moustache hair is like a strap. The thinner dimension is as thick as 0.2MM and the thicker dimension is as thick as 0.3 MM. These are usually the thickest hairs measured. Sometimes very short abnormally thick hair is where the root is damaged and needs to be removed.

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Wiki User

14y ago
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The average thickness of a human hair is about 0.002 to 0.005 inches.

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AnswerBot

10mo ago
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0.04 and 0.025 mm

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Wiki User

11y ago
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Put it under a microscope

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Wiki User

16y ago
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The width of a human hair is 0.0018 cm.

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Wiki User

15y ago
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Millimeter

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Wiki User

13y ago
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Heath Mumaw

Lvl 1
3y ago
no

2

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Wiki User

16y ago
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micrometer

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Anonymous

4y ago
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Q: What is the average thickness of a human hair in inches?
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