Get CAD Files Ready for Your CNC Machine in Seconds

Batch convert STEP and IGES files to shop-floor formats. Automatic unit conversion and coordinate system alignment.

Desktop app · $179 one-time · Subscription optional · 100% offline

Download Free Trial

Free trial: 10 conversions with every feature. No credit card required. Windows 10/11.

Valve manifold (STEP → STL), rendered from the converted file — **STEP → STL**Valve manifold: 19.7 MB STEP → 24.3 MB STL, 486,121 triangles, 11.5 s (Ryzen 9 3900X).

The Shop Floor Format Problem

Without 3D CAD Converter

Designer sends IGES, your CAM software needs STEP
Units are in inches but your machine runs metric
Axis orientation is wrong — Y-up instead of Z-up
Converting one file at a time for each job

With 3D CAD Converter

Batch convert entire job folders instantly
Auto-convert mm ↔ inches ↔ meters during import
Fix Y-up/Z-up and left/right-hand coordinate systems
Save presets per machine — reuse every time

Built for Manufacturing Workflows

CAD to CNC Formats

STEP and IGES to STL, OBJ, 3MF and more. Optional repair of broken STEP and IGES surfaces and unit conversion run in the same pass.

Unit Conversion

Convert between mm, cm, inches, meters, and feet. A single wrong unit can ruin a $50,000 CNC run — catch it automatically.

Coordinate System Fix

Fix axis orientation mismatches (Y-up to Z-up, left-hand to right-hand). Align models to your machine's coordinate system.

Production Batch

Process entire job folders. CLI and watched-folder mode for automated manufacturing pipelines.

Common Manufacturing Conversions

From	To	Use Case
IGES	STEP	CAM software import
STEP	STL / 3MF	3D printing, prototyping
STEP	DXF	2D drawing exchange
OBJ / STL	STEP	Supplier file exchange

How It Works

Download & Install

Free trial: 10 conversions with every feature. Windows 10/11.

Add Your Files

Drag and drop files or entire folders. 15+ 3D formats supported.

Click Convert

Batch processing handles entire folders with progress tracking and ETA.

100% Offline — Your Files Never Leave Your PC

No cloud uploads, no internet required. Your intellectual property stays on your machine. Critical for defense, aerospace, and any business with NDA-protected CAD data.

Stop Paying Annual Subscriptions

Tool	Price	Model
CAD Exchanger	~~$590/year~~	Subscription (annual renewal)
Spin 3D	~~$30/year~~	Subscription (annual renewal)
3D CAD Converter	$179	✔ Pay once, own forever

Download Free Trial Buy Now — $179

Free trial: 10 conversions with every feature. No credit card required. Windows 10/11.