The average male hand measures 189 millimetres (7.44 inches) in length. This distance is divided in half by the palm and the middle finger. Therefore, the average length of a man’s middle finger is 95 millimetres, or 3.72 inches.
The lengths of the other fingers are visibly shorter than that of the middle finger. The average hand width, which is proportional to hand length, is also useful to know. The average width of a man’s palm is 84 millimetres, or 3.3 inches. The female versions of these average dimensions are typically 90 percent of the male counterparts, resulting in an average hand length of 172 millimetres (6.77 inches) and an average palm width of 74 millimetres (2.87 inches).