With the #4 size, you can start to get a brush or crew cut, which are similar to a buzz cut but include a skin fade on the sides and longer hair on top.
27+ 1 Inch Haircut Length. Generally, each haircut number represents 1/8 of an inch of length. As the numbers increase, so too does the length of the haircut.
How To Determine The Best Haircut Length from www.byrdie.com
It is kind of hair cut where little hair trimmed with lots of hair still left. For guys with a coarse hair texture similar to mine, the best length is usually either a 1 or 00 guard with the grain (wtg). To go from a #2(2/8) length to a #8(8/8) length takes six weeks for a guy whose hair grows at the average rate of growth.
For men, very short would only be a buzz cut, for women, it's not out of the question to include a short pixie cut.
A number 0 is cut without a guard and is essentially a shaved look (1/16 inch of hair left). Ideal for people with a rounder face, it leaves a good amount of hair while still maintaining a neat and tidy hair length. Read on for six tips to use as your hair length guide, so you can make the chop with confidence. The closest you can get to that outcome or haircut length is if you use a #2 (2/8 inches) guide comb together with an open #1 (3/32 inches) blade on oster and andis clippers only.