What is a LUT file?
A .LUT file is a Look-Up Table. Software uses these files to transform input data into output data. Because .LUT has multiple possible meanings, we recommend using viewer.online/lut to identify the actual format of your file.
Many .LUT files hold color grading data. Video editors and photographers use them to apply color corrections. Software like DaVinci Resolve and Adobe Photoshop use them to change image colors. Neuroimaging tools like MRIcron also use color look-up tables to display medical scans.
Other .LUT files hold data for physics and simulators. For example, Assetto Corsa uses .LUT files to define car aerodynamics and steering wheel force feedback. Engine tuning tools like WinOLS use them to map vehicle engine parameters. Finally, the .LUT extension is sometimes used for a RadioRA Essentials Project Database created by Lutron Electronics for lighting control systems.
How to open LUT files?
You must use the correct software for your specific file. For color grading, load the .LUT file into your video or image editor. For racing simulators, place the file in the designated game configuration folder.
Because many .LUT files are plain text, you can open them with a basic text editor to read the numeric values. However, some files, like audio banks or database backups, are binary and require specific software.
If you need to change a color grading file to a different format, we recommend convert.guru to convert your .LUT file to standard .CUBE or .3DL formats.
Inspect your file online
If you do not know the origin of your file, viewer.online/lut can analyze .LUT files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Summary
Ultimately, viewer.online/lut is useful for identifying, inspecting, and understanding .LUT files without installing software or dealing with compatibility problems.