Convert Z-Up to Y-Up — in Batch

Stop hand-rotating every model that lands sideways in Blender, Unity or Unreal.

CAD tools export Z-up. Game engines and many DCC tools expect Y-up. 3D CAD Converter flips the up-axis correctly while it converts — for one file or a whole folder.

Download Free Trial

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

The 90-Degree Rotation Problem

Without 3D CAD Converter

Every imported model is lying on its side or rotated 90 degrees
Manually setting X rotation to -90 and applying transforms, file after file
Writing Blender Python scripts just to batch a rotation
Baked-in rotation offsets that break animation and physics later

With 3D CAD Converter

Pick the target up-axis once — Y-up or Z-up
Geometry is rotated into the correct frame, not faked with a parent transform
Run a whole folder of CAD or mesh files in one pass
Models drop into the engine upright, every time

What You Get

True Axis Rotation

Converts between Y-up and Z-up by transforming the actual geometry, so there are no leftover rotation offsets to clean up downstream.

Batch Whole Folders

Re-orient hundreds of models at once. Ideal for asset libraries and migrating a CAD catalog into a game engine.

Engine-Ready Output

Combine the axis flip with conversion to glTF, GLB, FBX, OBJ or STL so models are import-ready for Unity, Unreal, Blender and Godot.

CLI Automation

Script the up-axis conversion into your build or asset pipeline — no GUI clicks, fully repeatable.

Automate It

# Convert STEP to glTF and flip Z-up to Y-up

cadconvert convert part.step -f gltf --up-axis y
# Batch a folder for a Y-up engine

cadconvert batch ./assets -f glb --up-axis y

How It Works

Download & Install

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

Choose Up-Axis & Format

Pick Y-up or Z-up and your output format. Apply it to one model or the whole queue.

Click Convert

Batch processing handles entire folders with progress tracking and ETA.

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.