Calculating various bits about regular hexagons Given length of a side x... Tip to tip across the hex is 2x. Height of the hex flat side to flat side is 2x(sqrt(3/4)) or about 1.732x. Area of the hex is 1.5(x^2 (sqrt(3)) or about 2.56x^2. Example: Making graph paper with 4 hexes per square inch Hexagon with a side length of x... The area of that hex would be about... 2.6 (x^2) So for 4 hexes per s