Calculator cluster
Fine woodworking & cabinetry
Crown moulding, shelf sag, cabinet doors, balusters, wood movement and segmented rings.
Fine woodworking & cabinetry
Baluster / Spindle Spacing Calculator
Evenly space balusters or pickets between posts so the gap stays at or under the 4-inch (102 mm) sphere rule.
Fine woodworking & cabinetry
Cabinet Door Sizing Calculator
Size overlay or inset cabinet doors and rail/stile cut lengths from the opening, overlay or gap, and stile width.
Fine woodworking & cabinetry
Crown Molding Angle Calculator
Get compound-saw miter and bevel angles from crown spring angle and wall corner. Defaults match 52° spring on a 90° inside corner.
Fine woodworking & cabinetry
Polygon & Segmented Ring Calculator
Miter angle, outside face length and chord for regular polygons and segmented turning rings from side count and diameter.
Fine woodworking & cabinetry
Shelf Sag (Load Bearing) Calculator
Estimate shelf deflection from span, thickness, depth, material and load, and check a simple L/360 stiffness rule.
Fine woodworking & cabinetry
Wood Movement / Expansion Estimator
Estimate seasonal width change of a board from species, flatsawn vs quartersawn cut, and the change in moisture content.