Import one or more LUTs
Import CUBE files or compatible cube-strip PNG textures, then switch between them in the LUT list.
Free Online 3D LUT Converter
Convert 3D LUTs locally in your browser. Import CUBE or cube-strip PNG LUTs, preview them on a photo, resize the grid, and export CUBE, SPI3D, 3DL, RGB CSV, or PNG.
Preview
Load an image to preview a LUT.
Original
How it works
Convert a LUT in three steps
Preview the LUT on a still image, choose a supported output and grid size, then export the converted file.
Preview with a still
Use the sample photo or load a JPG, PNG, or WebP preview image. The image never leaves your browser.
Resize and export
Choose an available grid size and export CUBE, SPI3D, 3DL, RGB CSV, or cube-strip PNG.
Format support
Supported inputs and exports
Import a CUBE or compatible cube-strip PNG file, then choose a supported export format and grid size.
| Parameter | Details |
|---|---|
| Supported imports | 3D CUBE (.cube) with a normalized 0–1 input domain, or a compatible horizontal cube-strip PNG. Other LUT formats and grid PNG imports are not supported. |
| Export formats | CUBE (.cube), SPI3D (.spi3d), 3DL (.3dl), RGB CSV, and horizontal cube-strip PNG. Check the target software or device specification before use. |
| Export grid sizes | 16, 17, 32, 33, 64, or 65 points per axis, depending on the selected output. For example, the Blackmagic Camera preset offers 17 and 33 points; it does not export a 65-point file. |
| Grid resampling | Trilinear interpolation. Resizing samples the existing transform; it does not add source information or guarantee lossless results. |
| PNG layout & precision | Horizontal cube-strip PNG uses width N×N and height N for an N-point LUT. PNG import and export use 8-bit RGB channel values and can introduce quantization compared with floating-point CUBE data. |
| Color space | The LUT retains its intended input and output color spaces. Changing its format or grid does not create a Log-to-Rec.709 conversion. |
| Processing & file privacy | JavaScript and Canvas process LUT files and preview images locally in the browser. These files are not uploaded for conversion. |
Common conversions
Convert CUBE and PNG LUT files between workflows
Change the file type or grid size of an existing LUT for a compatible editing or graphics workflow.
CUBE to PNG LUT texture
Turn a .cube LUT into a cube-strip PNG texture for compatible real-time and graphics workflows.
PNG LUT texture to CUBE
Load a supported cube-strip PNG and export a standard .cube file for compatible color applications.
Resize a 3D LUT grid
Resample a LUT to an available 16, 17, 32, 33, 64, or 65-point grid when the selected format supports it.
Before you convert
What this LUT converter does not do
This tool converts an existing 3D LUT file. It does not replace color management or create a look from an ordinary photo.
Preview images are for checking only. The JPG, PNG, or WebP image you load is not converted or included in the download.
It does not convert color spaces. Log-to-Rec.709 transforms and camera input transforms belong in a color-managed video or photo workflow.
It does not create a LUT from a photo. Use Color Match when you want to build a reusable look from a source and reference image.
FAQs
Frequently asked questions
No. LUT parsing, image preview, resizing, and export run locally in your browser.
You can import 3D CUBE files with a normalized 0-1 input domain and compatible cube-strip PNG LUT textures. Import is currently limited to these two formats.
Yes. Convert CUBE to a horizontal cube-strip PNG, or import a compatible strip and export CUBE. For Unity or Unreal Engine, check the layout, orientation, color settings, and engine version your project requires. Grid and Hald PNG inputs are not supported.
Follow the target software or device specifications. Some camera apps and monitors accept 17 or 33 points; support depends on the model, firmware, and format. The converter shows only the sizes available for your selected output.
No. Converting the file format or grid size does not turn a camera Log LUT into a Rec.709 transform or change its intended input color space.
It can. The converter uses trilinear interpolation, and the difference depends on the LUT and the target application. Compare gradients, skin tones, saturated colors, and highlights before delivery. Increasing the grid later will not recover information lost when reducing it.