Workshop tools
Quick reference tools for fabrication and machine shop work - no account, no long forms, calculated instantly in your browser.
What wrench do I need?
Quick lookup for bolts and sockets.
Tap drill size
Find the drill for a given thread.
mm ↔ inches
Quick length converter.
Plate weight
Estimate the weight of a plate.
Drilling RPM
Calculate spindle speed.
Torque
Convert torque units.
Geometry calculators
Circle, right triangle, bolt circle.
Thread table
Metric, UNC and UNF reference.
Reference values only - always verify against the actual part before machining, tapping or tightening anything.