Woodworking calculators

Enter the finished opening and the joinery your router bits or shaper cutters actually produce. The calculator sizes each door, its rails, stiles, and panel, then totals the frame stock for matching openings.

Enter the finished top and bottom diameters, height, stave count, wall thickness, and stock size. The calculator returns the compound bevel, taper layout, inner openings, and a simple board estimate.

Enter the airflow, duct size, duct lengths, fittings, separator, filter, and fan efficiency. The calculator estimates the critical-path pressure loss and the fan operating point to check against a fan curve.

Enter the panel species, grain direction, groove geometry, and expected moisture range. The calculator sizes the panel so it can expand in humid weather and still stay captured when it shrinks.

Enter the lag screw size, wood specific gravity, screw length, shank length, and loading direction. The calculator returns the NDS threaded lead-hole range, common fractional bits inside that range, and the two drilling depths.

Enter the finished base, rim, height, ring thickness, wall thickness, allowances, and kerf. The calculator turns that profile into a ring-by-ring cut list with long and short segment edges, strip widths, stock length, and estimated board feet.

Enter the cabinet opening, side-mount slide clearance, material thicknesses, and groove details. The calculator returns the finished box size, a five-piece cut list, depth fit, usable interior space, and material area.

Enter the leg spacing at the top and at the floor to solve the geometry of a leg that splays in both directions. The results include the two projected angles, true compound splay, and the length to mill.

Enter a raw resistance-meter reading, the wood temperature, a species, and your moisture target. The calculator applies the temperature table first, then the species curve, and shows each adjustment.

Enter the ratio you want, the circular pitch of the teeth, and the largest axle spacing that fits your project. The calculator searches integer tooth pairs and reports the closest practical pair with blank sizes and speed.