How Big is a Micron?

What is a Micron?

A micron, or micrometer/micrometre or µm, is a measurement used in sciences, industry, and English speaking countries.

Why use Micron as a Measurement?

Have you ever had to measure something that is so small it doesn't make sense to measure in centimeters or millimeters? That is where microns come in.

How Big is a Micron?

1 micron is the same as .00003937 inches, or 0.001 mm.

Between 1 μm and 10 μm:

• 1–10 μm – length of a typical bacterium
• 3–8 μm – width of a spider's web
• ~10 μm – diameter of a rain droplet

Over 10 μm:

• 10 to 55 μm – width of wool fiber
• 17 to 181 μm – diameter of human hair
• 70 to 180 μm – thickness of paper
• 19,053 μm - diameter of American Penny