# How long is 100 microns?

It's about as wide as a Strand of Hair
The width of a Strand of Hair is about 99 microns.
(average)
A strand of human hair averages 99 µm (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
It's about as tall as a sheet of Paper
The height of a sheet of Paper is about 100 microns.
(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
A single sheet of 20 lb, 8.5 inch x 11 inch paper is just 100 microns thick. This style of paper weighs a mere 5 g per sheet.
It's about one-fifteenth as long as a Grain of Sand
The length of a Grain of Sand is about 1,250 microns.
(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 1,250 microns. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15,100,000 microns in height.
It's about thirteen times as long as a Red Blood Cell
The length of a Red Blood Cell is about 7.50 microns.
(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles)
An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about one-fifteenth as wide as a Strand of Spaghetti
The width of a Strand of Spaghetti is about 1,700 microns.
(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 1,700 microns in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about seventeen times as long as a Cell's Nucleus
The length of a Cell's Nucleus is about 6 microns.
(for animal cell)
The nucleus of an animal cell measures an average of six micrometers. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.
It's about 50 times as long as a Bacterium
The length of a Bacterium is about 2 microns.
(Escherichia coli) (rod-shaped configuration)
An rod-shaped E. coli bacterium measures about two micrometers in length. A staple of biology labs, E. coli can reproduce in as little as twenty minutes.
It's about 55 times as long as a Mitochondrion
The length of a Mitochondrion is about 1.880 microns.
(Eukaryotic; average)
A mitochondrion measures between 0.75 and 3 micrometers (Âµm). The mitochondrion is commonly referred to as the powerhouse of the cell, responsible for the generation of ATP. The size, shape, and distribution of mitochondria varies widely, with human liver cells each having 1,000 to 2,000 mitochondria.
It's about one-one-hundred-fiftieth as long as an Aspirin
The length of an Aspirin is about 14,000 microns.
(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 14,000 microns in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about one-five-hundred-fiftieth as tall as a Golf Tee
The height of a Golf Tee is about 54,000 microns.
The most common golf tee size and the length preferred for iron and most wood clubs is 54,000 microns tall. The tee did not come into common use until it was promoted by professional golfers Walter Hagen and Joe Kirkwood, as part of a marketing effort by the patent-holder of the well-known, "Reddy Tee."
It's about one-four-thousandth as tall as a Bowling Pin
The height of a Bowling Pin is about 381,000 microns.
(USBC specifications; tenpin)
According to the United States Bowling Congress specifications, a tenpin bowling pin should be within 794 microns of 381,000 microns in height. The USBC further mandates that certified pins be made of sugar maple wood, unless otherwise approved by the organization.
It's about one-six-thousand-five-hundredth as long as a Woman's Footstep
The length of a Woman's Footstep is about 660,000 microns.
(for healthy, middle-aged woman of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a woman's step is 660,000 microns, for an average stride (two-step's length) of 1,300,000 microns. The average person walks at a speed of about 1.3 m/s
It's about one-seven-thousand-five-hundredth as long as a Man's Footstep
The length of a Man's Footstep is about 790,000 microns.
(for healthy, middle-aged man of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a man's step is 790,000 microns, for an average stride (two-step's length) of 1,600,000 microns. The average person walks at a speed of about 1.3 m/s
It's about one-eight-thousand-five-hundredth as tall as Verne Troyer
The height of Verne Troyer is about 810,000 microns.
(1969-2018) (actor)
Verne Troyer, most famous for his role as Mini-Me in the Austin Powers series, was an LP with a height of 810,000 microns. Troyer's first role was as a stunt double for a baby in the 1994 film Baby's Day Out.
It's about one-nine-thousandth as tall as General Tom Thumb
The height of General Tom Thumb is about 910,000 microns.
(a.k.a. Charles Sherwood Stratton) (1838-1883) (circus performer; height at death)
General Tom Thumb was an LP with a height (at his death) of 910,000 microns. Thumb stopped growing at 640,000 microns when he was five years old, but resumed growth in his teens which continued through the remainder of his life.

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