Engineering tools

Free engineering calculators, TooldurCAD and technical notes

Tooldur provides free tools for mechanical design, electrical work, construction, technical drawings and project tracking.

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What is inside Tooldur?

Calculators, a CAD helper, technical note libraries and project tracking are organized in one platform.

Engineering calculatorsPractical calculators for tolerances, keyways, tap drills, bolt torque, sheet metal and unit conversion.
TooldurCADA lightweight desktop assistant for machine designers and SOLIDWORKS users.
Technical notesCopy-ready technical drawing notes for manufacturing, surfaces, coatings and assembly.
Project trackingA simple project and task tracking area for technical work.