Free workshop tools · no sign-up
Do the math before you make the first cut.
61 free calculators for board feet, cut lists, miter angles, screw lengths and finish coverage — in inches or millimeters, right on your phone.

Calculators
Board Foot & Lumber Cost
Calculate lumber volume and total material cost.
02Cut List & Waste Optimizer
How many standard boards do you need?
03Miter & Bevel Angles
Saw settings for frames and multi-sided boxes.
04Pocket Hole Screw Selector
The right screw length and drill stop.
05Shelf Sag Calculator
Will your shelf bow under books? Check before you build.
06Wood Movement Calculator
Seasonal expansion of tabletops and panels by species.
07Finish & Stain Coverage
How much stain, poly or oil to buy for your project.
08Inch Fraction ↔ MM Converter
Tape-measure fractions to millimeters and back.
Need ready-to-build plans?
5 complete build plans with cut lists — $14.
Popular guides
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Choosing Lumber: Hardwood vs Softwood
Which wood for which project? Pine, oak, beech, plywood and MDF compared.
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Minimize Cutting Waste in 7 Steps
Save 15–30% on lumber costs with a smart cut list and the right order of cuts.
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Workshop Safety: The Complete Checklist
Protect your eyes, ears, lungs and fingers. Essential rules for every home shop.
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Budgeting a Furniture Project
How to calculate the true cost: lumber, hardware, finish, wear and tear, and your hours.