MeshStep

Free Web-based Utilities ★★★★★ 0.0 (0) Verified Jul 15, 2026

Visit Tool → Submitted by ccatlett1984

A free online STEP viewer and STEP-to-STL converter. Open .step and .stp CAD files (ISO-10303 / AP203 / AP214 / AP242) directly in your browser — nothing is uploaded — inspect the geometry, highlight surface boundaries, check watertightness, and export a watertight STL mesh.