The top of the countertop is typically 36 inches from the floor. This number is based off of a standard lower cabinet height of 34.5 inches and a 1.5 inch laminate top. Solid Surface countertops are also 1.5 inches in thickness, were as 3cm stones are just shy of that amount (3 centimeters = 1.18110236 inches)

The upper cabinets from kitchen floor are typically 54 inches. You should leave about 18 inches above countertops. This is why a full height backsplash is assumed to be 18 +/- inches in height.

The standard width of a kitchen countertop is going to be 25.5 inches. The standard backsplash in stone is 4 inches and in solid surface is 3 inches.