About how much hair grows in a week?

Most people's hair grows at a rate of 1/2 of an inch per month. Some faster and some slower. I'm not a doctor or sciencetist, but I last time I got my hair cut, I asked the lady who cut it. So their is about 4 weeks in a month. 1/2 is .50. 50 divided by 4 is 12.5 so your answer is roughly .125 of an inch. (Please correct my math if I made mistakes, I'm not a Math Teacher either.)