The American Academy of Dermatology says that hair grows about 1/2 inch per month on average. That’s a grand total of about 6 inches per year for the hair on your head.
How long will it take my hair to grow 12 inches?
According to the CDC, scalp hair grows an average of one-half inch per month. If your hair is two inches long and you’re aiming for shoulder length (about 12 inches) growth, that adds up to a little less than two years to reach your goal.
Can hair grow 3 inches in a month?
It’s hard to say exactly how fast your hair grows — everyone is different! — but on average, hair grows about half an inch over the course of a month. That being said, it’s not unusual for hair to grow as little as a centimeter or as much as an inch in a month.