Free Woodworking & DIY Calculators

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Board feet calculators, lumber cost estimators, plywood sheet calculators, and material weight tools.

Miter angles, dovetail spacing, mortise and tenon sizing, dowel joints, and fastener calculators.

Stain, paint, polyurethane, and epoxy coverage calculators for wood finishing projects.

Shelf span, deck board, fence post, cabinet cost, and total project estimators.

Calculate board feet from lumber dimensions. Board feet is the standard unit of measurement for hardwood lumber.

Estimate total lumber cost from board feet and price per board foot, with tax and delivery options.

Calculate how many 4x8 plywood sheets you need for a project based on total area required.

Calculate miter and bevel angles for multi-sided shapes like picture frames, boxes, and planters.

Calculate pin and tail spacing for hand-cut dovetail joints based on board width and desired ratio.

Find the correct pilot hole and clearance hole drill bit sizes for wood screws in hardwood and softwood.

Calculate how many gallons of wood stain you need based on project area and wood porosity.

Calculate how much paint you need for wood surfaces based on area, coverage rate, and number of coats.

Calculate stain needed for a deck including boards, railings, and stairs.

Calculate epoxy resin volume for river tables, voids, and pour-on finishes based on dimensions.