01 / Tools

Tools for real workshop work.

Free browser-based calculators for metal, machining, holes, and geometry—then take jobs, history, and technical exports back to Workshop Calc.

Built from Workshop Calc

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Fabrication

Metal Weight CalculatorEstimate stock weight from geometry, length, quantity, and material density.

Machining

Bolt Circle CalculatorGenerate equally spaced hole coordinates from PCD, count, and start angle.Chamfer & Countersink CalculatorCalculate ideal axial depth from two diameters and the included angle.Tap Drill CalculatorEstimate tap-drill diameter and compare nearby standard drill sizes.Speeds & Feeds CalculatorEstimate a sourced starting point for spindle speed and feed.Measurement Over Wires CalculatorCalculate thread measurement over wires with explicit corrections.

Conversion

Unit & Fraction ConverterConvert workshop units, decimals, fractional inches, and metric dimensions.

Geometry

Right Triangle CalculatorSolve the remaining sides and angles from two valid measurements.Circle Through 3 PointsFind a circle center, radius, and diameter from three points.

Reference

Drill Size ChartCompare common drill-size systems in one searchable reference.Material Density ChartLook up nominal densities and send a custom value to Metal Weight.