How to Use Normal Maps in Unreal Engine

Published: January 3, 2026 • 6 min read

Master normal map creation for Unreal Engine 5. This comprehensive guide covers generating DirectX-compatible normal maps, importing them into UE5, and creating stunning PBR materials that respond realistically to lighting.

Normal Map Generator Interface for Unreal Engine

Unreal Engine Normal Map Format

Unlike Unity which uses OpenGL format, Unreal Engine uses DirectX format for normal maps. The key difference is the Y (green) channel is inverted. When generating normal maps for Unreal, you must enable the "Invert Y" option.

⚠️ Important: Always enable "Invert Y" when generating normal maps for Unreal Engine. Using OpenGL format normal maps will result in inverted/incorrect lighting.

Step-by-Step: Creating Normal Maps for Unreal Engine

1Open the Normal Map Generator

Visit our free normal map generator. It runs entirely in your browser with GPU acceleration – no downloads needed.

2Upload Your Source Image

Drag and drop your texture or height map. Unreal Engine works great with:

Height maps from Substance or World Machine
Sculpted textures from ZBrush
Photogrammetry textures
Hand-painted height maps

3Configure for Unreal Engine (DirectX)

Critical settings for Unreal Engine:

Invert Y: ENABLED ✓ (DirectX format)
Strength: 2-5 depending on desired intensity
Blur: 0-2 for crisp detail

4Download Your Normal Map

Preview the result in the 3D viewer, then download as PNG or TGA (TGA is native to Unreal).

5Import into Unreal Engine

In Unreal Engine:

Drag the file into Content Browser
Double-click to open the texture
Verify Compression Settings is set to Normalmap
Ensure sRGB is unchecked

6Create Material with Normal Map

In the Material Editor:

Create a Texture Sample node
Assign your normal map texture
Connect the RGB output to the Normal input
Optionally add a FlattenNormal node to control intensity

Unreal Engine Material Graph Normal Map Connection

Unreal Engine Normal Map Best Practices

Resolution: Use power-of-2 sizes (1024, 2048, 4096)
Format: TGA for source, BC5 compression for runtime
sRGB: Always disable sRGB for normal maps
Nanite: Normal maps work great with Nanite geometry
Virtual Textures: Enable for large open worlds

Troubleshooting Common Issues

Lighting appears inverted or wrong

You're likely using an OpenGL format normal map. Re-generate with Invert Y enabled for DirectX/Unreal format.

Normal map looks washed out

Check that sRGB is disabled in texture settings. Normal maps should never use sRGB color space.

Details appear too strong or too weak

Use a FlattenNormal node in your material to adjust intensity, or regenerate with different strength settings.

Create Unreal Engine Normal Maps Now

Generate DirectX-compatible normal maps for UE5 in seconds with our free tool.

🎮 Open Normal Map Generator