Maker Tools
Free calculators and utilities to help you plan, build, and optimize your woodworking projects.
Cutlist Optimizer
Plan your cuts. Generate a practical cutting diagram for your plywood and sheet goods. Features kerf compensation, grain direction control, and PDF export.
Shelf Sag Calculator
Will your shelf bow? Enter span, thickness, load, and material to estimate deflection before you build — with guidance on how to stiffen it.
Compound Miter Calculator
Exact miter & bevel angles for sloped boxes, planters, and hoppers — the compound math people most often get wrong.
Wood Movement Calculator
Estimate seasonal shrink & swell across the grain by species — build in the right allowances and avoid cracked panels.
Box Joint & Dovetail Layout
Evenly-spaced fingers or dovetail tails & pins, with the exact positions to mark from one edge.
Panel Glue-Up Calculator
How many boards to rip — and the equal stave width — to glue up a panel of any finished width.
Segmented Turning Calculator
Miter angle and outer/inner segment lengths for tight, gap-free segmented rings.