Torque Toolbox: Workshop Tools

Stop tabbing between browser windows at the bench. Torque Toolbox puts your torque calculations, drill & tap charts, feeds & speeds, and unit conversions in one fast, offline-ready app — built specifically for trade and workshop environments.
Whether you're on the floor of a machine shop, under a vehicle, or mid-fabrication, Torque Toolbox gives you the answers you need without the fuss.

-Features-
Torque Calculator
Calculate estimated torque values for Metric, UNC, and UNF fasteners with material, lubrication, preload, and gasket factors. Metric and imperial outputs with advanced calculation options.
Drill & Tap Calculator
Instantly find recommended tap drill sizes for Metric, UNC, and UNF threads.
Drill Bit Size Converter
Convert between letter, number, fractional, metric, and decimal inch drill sizes.
Machining Feeds & Speeds
Quick reference for cutting speeds and feed rates in the field.
Unit Converter
Fast workshop conversions for length, weight, temperature, speed, pressure, power, torque, area, volume, and more.
Saved Calculations & Setups
Save and recall your calculations and machining setups for repeat jobs.
Metric & Imperial Support
Full dual-system support throughout every tool.
Built for:
Machinists · Mechanical Fitters · Mechanics · Fabricators · Maintenance Trades · Apprentices · Workshop Technicians · Serious DIY & Automotive Users
Torque values are estimates only. Always verify against manufacturer specifications and approved procedures for critical applications.