Is there a free EMWorks alternative for wireless power coil design?

Yes — AirInduct Sim is a free, browser-based alternative to EMWorks (and the EMS / HFWorks plug-ins) for the inductive WPT regime. It uses analytical Biot–Savart instead of FEM, so a 100×100 field map returns in under two seconds — no SOLIDWORKS host required.

When is EMWorks still the right tool?

EMWorks remains the right pick when the coil is part of a larger SOLIDWORKS assembly that needs coupled CAD, thermal and structural co-simulation. For pure inductive WPT exploration AirInduct is dramatically faster and free.

Can I export AirInduct geometry to SOLIDWORKS / EMWorks?

Yes — AirInduct exports DXF outlines and parameter sheets that import directly into SOLIDWORKS, plus a SPICE netlist with L, M and k for board-level simulation.

AirInduct Sim

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ALTERNATIVE — EMWORKS

NO SOLIDWORKS LICENSE

NO PLUG-IN

BROWSER-NATIVE

The free EMWorks alternative.

EMWorks is a SOLIDWORKS-integrated electromagnetic FEA plug-in (EMS, EMWorks2D, HFWorks) — and overkill for early-stage inductive WPT coil exploration. AirInduct Sim covers the magnetostatic WPT regime that drives most EMWorks coil-design projects, runs in your browser, and starts at $0.

01. · Why teams switch from EMWorks

No SOLIDWORKS host license, no EMWorks plug-in seat.
No FEM mesh setup before the first coupling result.
Eight WPT topology presets out of the box (Helmholtz, DTC, square, cross).
Runs on any browser, no install, no GPU.
Public REST API and MCP server for AI agents.

02. · Where EMWorks still wins

Coupled CAD-thermal-structural co-simulation inside an existing SOLIDWORKS assembly, full EMC certification, detailed lossy-material studies. AirInduct will get you to a candidate WPT coil in seconds; EMWorks is where the coupled-physics certification lap belongs.

03. · Migration path

Build and sweep your coil in AirInduct, export geometry and parameter sets, then drop them into SOLIDWORKS + EMWorks for the final assembly-level pass.

See the full comparison matrix or try the Helmholtz simulator.

Stop waiting on SOLIDWORKS.

Open the simulator →Full comparison