9+ Three Inches Of Hair. On average, hair grows about half an inch per month. The scalp hair grows at about 1/3 to 1/2 inch per month on average, so about four to six inches per year for the hair on your head, says dermatologist, panos vasiloudes, md.

This article discusses the average rate of hair growth and how long it would typically take for hair to grow three inches. Generally speaking, 3 inches of hair is ideal for braiding since it allows for the creation of short braids that, when finished, will be around half the length. Understanding hair measurements can be a bit confusing, but fear not!







