Free for everyone

Magnetism 3D Lab is free for teachers, students, and anyone curious about magnetic fields. No subscription, no per-seat pricing, no trial timer. Open the simulator, build a scene, share a link.

Why free?

This is the browser-native successor to a desktop physics-education product sold to classrooms since 2003. It exists because making electromagnetism visible to students is worth doing.

What you get

• Full simulator: wires, current loops, solenoids, bar magnets, uniform fields
• Visualization modes: heatmap, LIC, iron filings, field vectors, glow streamlines, 3D field lines
• Charged particle trajectories (Lorentz force) in 2D and 3D
• Ampère's law path-integral verification
• Save scenes to your account and share via deep link
• Embed into Canvas, Blackboard, Moodle, Notion, or any course page
• PNG and print export (with a small electromagnetism3d.com mark)

Open the simulator