1 micrometre

Click on the thumbnail image to jump to the desired Human-scale order of length magnitude article: top-left is 1E-6 m, lower-right is 1E5 m.

Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the width of a human hair is about 10 times that of the image.^[1]

To help compare different orders of magnitude this page lists some items with lengths between 10⁻⁶ and 10⁻⁵ m (between 1 and 10 micrometres, or µm).

Distances shorter than 1 µm

• ~0.7–300 µm — Wavelength of infrared radiation
• 1 µm — the side of square of area 10⁻¹² m²
• 1 µm — edge of cube of volume 10⁻¹⁸ m³ (one fL.)
• 1–10 µm — diameter of a typical bacterium
• 1.55 µm — wavelength of light used in optical fibre
• 3–4 µm — size of a typical yeast cell
• 5 µm — length of a typical human spermatozoon's head ^[2]
• 6 µm — anthrax spore
• 7 µm — diameter of the nucleus of a typical eukaryotic cell
• about 7 μm — diameter of human red blood cells ^[3]
• 3–8 µm — width of strand of spider web silk^[4]
• 8 µm — width of a chloroplast
• 9 µm — thickness of the tape in a 120-minute compact cassette.
• about 10 µm — size of a fog, mist or cloud water droplet

Distances longer than 10 µm

Notes