Convert-cube-to-xmp |verified| [2026 Edition]

Here’s a technical write-up for convert-cube-to-xmp, a utility (or conceptual process) that transforms 3D LUT files from the .cube format into Adobe’s .xmp format (often for camera profiles or lookup tables in Lightroom/Photoshop).

2. Input Format: .cube

  • Standard format for 3D LUTs.
  • Defines a 3D grid of RGB output values.
  • Typically 17x17x17, 33x33x33, or 65x65x65.
  • Simple text format with header lines: 
    TITLE "My LUT"
LUT_3D_SIZE 33
DOMAIN_MIN 0.0 0.0 0.0
DOMAIN_MAX 1.0 1.0 1.0
0.000000 0.000000 0.000000
0.031373 0.031373 0.031373
...

Method 2: Using Dedicated LUT Converters (The Batch Way)

If you have 50 CUBE files to convert, manual import/export in Photoshop is tedious. Use dedicated software. convert-cube-to-xmp

Popular Tools:

  • LUTCalc (Web-based): A free, open-source calculator. Go to cameramanben.github.io/LUTCalc. Load your CUBE, go to the "Output" tab, and select "Adobe Lightroom (XMP)".
  • 3D LUT Creator (Paid): The "Photoshop of LUTs." It allows you to load a CUBE and export natively as .xmp for Lightroom.
  • Lattice (Free/Paid): A powerful, technical LUT editor. Load the CUBE, go to File > Export > Adobe Profiles/Lightroom.

Workflow using Lattice (Example):

  1. Drag your .cube file into Lattice.
  2. Verify the waveform and colorspace.
  3. Click Export.
  4. Under "Preset Format," select Adobe Lightroom (XMP).
  5. Adjust intensity if needed (XMP supports opacity sliders; CUBE does not). Save.

Step 2: Prepare Your Cube File

Ensure your cube file is in a format compatible with the convert-cube-to-xmp tool. Typically, cube files have a .cube or .cub extension. Here’s a technical write-up for convert-cube-to-xmp , a

Understanding the Difference: CUBE vs. XMP

Before we open any software, it is vital to understand why a direct conversion is tricky. Standard format for 3D LUTs