The worktop thickness and depth.
Normal height for kitchen cabinets. A 12 inch or 15 inch tall cabinet fits neatly over a refrigerator. Where the cabinets run all the way to the ceiling 48 inch cabinets are the logical choice. The reason for this is that 18 inches of clearance between base cabinets and uppers are regarded as the optimal working space and with base cabinets generally 36 inches high with countertop included and 24 inches deep upper cabinets beginning at 54 inches provides the desired 18 inch clearance.
The standard dimensions for kitchen base cabinets are. The trade off is that for every inch you raise the cabinets you will have more open space to work in but less storage space at an easily reachable height. Height 720mm depth 560 600mm widths 150 300 350 400 450 500 600 800 900 1000 1200mm plinth 150mm worktop thickness 20 40mm worktop depth 600 650mm cabinet depth overhang at front overall height 890 910mm.