What it does
EngineeringToolkit combines a scientific calculator, formula database, free-body diagrams and interactive engineering demonstrations.
EngineeringToolkit combines formula substitutions and visual experiments. Its free-body builder treats forces as concurrent through the body's centre of mass, so it models translation without rotation. Enter newtons and degrees counter-clockwise from +x, or drag arrow tips; weight follows mass through W=m·g. Component sums give the resultant and acceleration. Force equilibrium means zero acceleration, which can include constant-velocity motion. Core tools need no sign-up; optional paid plans add larger workspaces, exports, templates and teams. The site says most tools work offline once loaded, while external Desmos/GeoGebra/Falstad embeds need internet. Its separate local CAD viewer accepts STL/OBJ/GLB/GLTF up to 100 MB, according to the provider.
Strengths
- Formula calculations show substitutions
- Free-body diagram builder supports force visualization
Best for
- Teaching or reviewing introductory engineering relationships
Sources
- EngineeringToolkit — Learn Engineering with Visual Experiments (Oct 26, 2026)
- Free-Body Diagram Builder - EngineeringToolkit (Oct 26, 2026)