Why convert IGES to STEP?

STEP is the modern neutral standard with stronger solid and assembly support than legacy IGES.

Will surfaces become solids?

When the IGES surfaces are clean and closed they can form solids; quality depends on the source data.

Is the conversion free and online?

Yes. Upload your .igs / .iges file and choose STEP as the target — no software to install.

IGES to STEP中文

IGES to STEP Converter Online

Convert IGES (.igs / .iges) into STEP (.step / .stp), upgrading legacy surface data to a modern neutral format with better solid and assembly support. Done online in WO3D — no install required.

Convert Now All Converters

Modernize legacy data

Move older IGES files to STEP, the current standard for CAD exchange.

Better solids

STEP handles solids and assemblies more robustly than IGES surfaces.

No install

No CAD software needed — upload IGES in the browser and get STEP out.

When to use it

When a modern CAD system or partner prefers STEP, converting legacy IGES to STEP improves compatibility.

STEP is the safer long-term archive format than older IGES surface data.

Surfaces to solids

IGES often stores surfaces/wireframe; sewing them into clean solids depends on the input quality.

Well-formed IGES surfaces convert cleanly; gappy data may need repair.

Why STEP

STEP carries solids, assemblies and metadata more reliably than IGES.

For most modern workflows STEP is the better neutral choice.