37 Gorgeous Kitchen Islands With Breakfast Bars (Pictures) A breakfast bar is either a full kitchen island or a countertop overhang with a height that has enough room for the legs and a size that can accommodate ample room for meals. A typical breakfast bar counter has a standard height of 42 inches (107 centimeters) and a depth/countertop overhang of 12 to 16 inches (30 to 40 centimeters).