I don't measure..I go by 'markers'(ear length, chin length..) I went from chin length to shoulder length in the pics to just below shoulder length in the back and collar bone length on the sides(currently). My back grows the fastest and my bangs... well they are very slow(frustrating /images/graemlins/mad.gif ). I had 2 trims(1 inch each). So I figure I get about 1 1/4 a month. My best growing time is in the summer so I'm about an inch a month right now.