The thickness of each of your fingernails is less than 1 millimeter.
Fingernails are four times thicker than the typical strand of hair.
The diameter of human hair varies from 0.0017 to 0.0180 cm (0.00067 to 0.0071 inches) with an average diameter of about 0.001 inches (0.00254 cm).
The diameter of your hair strand is what determines how thick your hair is.
Did you know your nails can reveal clues to your overall health? A touch of white here, a rosy tinge there, or some rippling or bumps may be a sign of disease in the body. Problems in the liver, lungs, and heart can show up in your nails.
Check out WebMD's What Your Nails Say About Your Health (slideshow) to learn what secrets your nails might reveal.
Fingernails grow an average of 3.5 millimeters per month. That's just over a tenth of an inch. And nails on your dominant hand tend to grow faster while toenails grow an average of 1.6 millimeters a month, according to the American Academy of Dermatology.
Discover more Things You Never Knew About Your Nails, shared by The Huffington Post.