Workshop Tools

Put practical mechanical calculations and reference tables in your pocket with Educated Monkey Workshop Tools. The app is designed for mechanics, fabricators, restorers and makers who want focused tools that continue working without an account or Internet connection.

Included tools:

• Torque Converter — convert between N·m, ft-lb, in-lb and kgf·m.
• Length Converter — convert common metric and US workshop measurements.
• Fraction / Decimal / Metric — move between familiar shop measurement formats.
• Temperature Converter — convert Celsius, Fahrenheit and Kelvin.
• Gear & Sprocket Ratio — calculate a ratio and compare gearing changes.
• Tire Size — calculate sidewall, diameter and circumference.
• RPM / Road Speed — estimate vehicle speed from tire size, RPM and overall ratio, or calculate RPM from speed.
• Torque-Wrench Extension — correct a torque-wrench setting for extension length and angle.
• Pulley Ratio — calculate driven speed and approximate open-belt length.
• Thread & Tap Drill — search common thread and general-purpose tap-drill references.
• Drill Size Reference — search fractional, number and letter drill sizes.
• Engine Displacement — calculate displacement from bore, stroke and cylinder count.

Choose US-first or metric-first units and use the device, light or dark-gray appearance. Tire information can be shared directly with the RPM / Road Speed calculator during the current session.

Private by design:

• No account required
• No advertising or analytics SDKs
• No Internet permission
• Preferences remain on your device
• Feedback opens your email app and is never sent automatically

Calculations and reference values are planning aids. Always confirm critical specifications, fastener procedures, tolerances and cutting-tool recommendations with the equipment, vehicle or component manufacturer before performing work.