How big is the average forehead in inches?

The average size of forehead is 2-3 inches from eyebrows to the hairline. However, if a person has large forehead that measures 4 inches, it does not mean that they have large head too. The size of the forehead widely vary because sometimes their hairline is further up their head. 

The forehead, popularly known as the sinciput is the region located at the frontal part of the cranium in the head. It is demarcated by the hairline to the eyebrow.

The forehead muscles aid in the formation of facial emotions and expressions.

The average inches of the forehead is 2.4 inches - 5.4 inches. Sometimes, due to hair loss as a result of biological or environmental conditions, the size of the forehead can extend further than the average size.

Therefore, we can conclude that the average size of the forehead in inches varies between 2.4 inches - 5.4 inches.

Learn more about the skull here:

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