Free Workshop Calculators

23 tools. Built and tested in a real workshop.

No sign-up, no generic calculator-farm nonsense — just the math I actually run before cutting, buying, finishing, or building.

Lumber & Material

6 tools
Board Foot CalculatorLumber volume and cost from dimensions → Wood Weight CalculatorEstimate lumber weight by species → Plywood Sheet CalculatorHow many sheets, waste included → Lumber Cost CalculatorPrice a mixed-species order at once → Wood Volume CalculatorCubic volume, rectangular or round → Wood Movement CalculatorPredict seasonal expansion by species →

Cutting & Angles

5 tools
Miter Angle CalculatorCorner angle to saw setting → Angle FinderRise and run to angle, or back → Compound Miter CalculatorMiter and bevel for crown molding → Saw Kerf CalculatorBlade width across a cut list → Bevel Angle CalculatorSaw tilt and width added by bevel → Cut List OptimizerAuto-nest cuts to minimize waste Soon

Joinery

3 tools
Mortise & Tenon CalculatorTenon size from the 1/3 rule → Dovetail CalculatorEven tail spacing and marking angle → Pocket Hole CalculatorScrew length and thread by thickness →

Drilling & Fasteners

3 tools
Drill Speed (RPM) CalculatorRight RPM for material and bit size → Screw Length & Pilot Hole CalculatorScrew length plus matching bit size → Dowel & Hole Spacing CalculatorPerfectly even spacing, any length →

Finishing

5 tools
Stain Coverage CalculatorHow much stain, by area and coats → Polyurethane CalculatorHow much poly, by coat count → Epoxy / Resin CalculatorVolume by area, depth, mix ratio → Wood Filler CalculatorFiller needed for gaps and cracks → Sandpaper Grit FinderGrit progression, surface to finish →

Measurement

1 tool
Feet-Inch Fraction CalculatorAdd or subtract tape-measure fractions →