Cutting List Calculator

Divide the usable board length by the piece length plus one kerf to get pieces per board, then divide your quantity by that and round up. For ten 18 in pieces from 96 in boards you get 5 per board, so you need 2 boards.

The kerf is the width of material the blade turns into dust on each cut, often about 1/8 in for a table saw. Across many cuts it adds up, so ignoring it can leave you one piece short on the last board.

Each piece needs its own length plus one kerf except the last one, so pieces per board is floor((usable + kerf) / (piece length + kerf)). Counting one fewer kerf than pieces matches how a real cut sequence ends without a trailing kerf.

Trim is length cut off the end of each board to square it or remove a split or defect before cutting parts. It is removed first, lowering the usable length on every board, which can reduce the pieces that fit.

The offcut shown is for a board holding a full set of pieces. The final board often holds fewer, so its real leftover is longer than the figure shown. Set that longer drop aside for smaller parts or test cuts.

Then nothing fits a single board and the tool reports zero pieces per board and zero boards. You will need longer stock, or you must join shorter pieces with a scarf or butt joint to reach the length.

Every field is in inches. If you work in feet, multiply by 12 first, and if you work in millimetres, convert to inches so the piece, stock, kerf and trim all share one unit.

No. This tool plans one repeated piece length at a time, which covers most shelf, rail and slat runs. For a mix of different lengths on the same board, run each length separately or use a full nesting cut optimizer.

No. The calculation runs in your browser, so your project dimensions stay on your device and nothing is uploaded or stored.