CloudConvert generally converts images, but it has a "Custom" scripting feature. You can upload an XMP and a TIFF reference image to generate a LUT.
: Open the HALD image in Adobe Lightroom or Photoshop and apply the XMP preset you want to convert. xmp to cube converter online free
For the most accurate results, apply your preset to the HALD image using a neutral or linear profile. XMP (DNG) to CUBE Converter Online - Presets Store CloudConvert generally converts images, but it has a
: Upload the edited image to an online generator like Presets Store or IWLTBAP to receive your converted .CUBE file. Desktop Alternatives for Batch Conversion CloudConvert generally converts images
Disclaimer: Always verify the licensing terms of the XMP presets you convert. Some creators prohibit redistribution or conversion of their intellectual property.