Cabinet Box Cut List Calculator
Give the finished carcass size and how it goes together, and get every panel cut to size — sides, top, bottom, back, and shelves. Works for base, wall, and tall cabinets, frameless or face-frame.
Advanced: back, shelves & clearances
How the cut list is built
With the top and bottom between the sides, sides are the full height × depth and the top and bottom are (width − 2 × thickness) × depth. Reverse it and the top and bottom run the full width while the sides drop to height − 2 × thickness.
An overlay back is the full outside width × height. A grooved back is the inside opening plus the groove depth on each side. Shelves are the interior width minus the clearance, by the depth minus the setback.
Worked example
A 24 × 30 × 24 frameless box in ¾″ ply, top/bottom between sides, overlay back, two shelves: sides 30 × 24, top & bottom 22½ × 24, back 24 × 30, shelves 22⅜ × 23. Seven parts total.
Building cabinet carcasses
Pick a joinery method and stay consistent
Whether the top and bottom sit between the sides or wrap them changes which parts get shortened, and mixing the two across a run of cabinets guarantees mismatched boxes. Choose one and let the calculator size every part to match.
The back does more than close the box
A captured back squares the carcass and stiffens it, which matters for wall cabinets carrying weight. An overlay back is quicker but relies on your assembly being square. Size it to the method you'll actually use.