LUT Format Converter Free
Convert between 16 LUT formats — .cube, .3dl, .csp, .spi3d, .vlt, .mga, .lut, HaldCLUT PNG, ASC CDL, and more — using tetrahedral or trilinear interpolation with precise grid resize (17³–65³). An in-depth conversion quality report covers ΔE 2000, neutral axis accuracy, per-channel RMS error, and an error heatmap. Batch-convert multiple files and download as a ZIP — all in the browser, no upload, no registration. Compatible with DaVinci Resolve, Premiere Pro, Final Cut Pro, Vegas Pro, After Effects, Panasonic VariCam / GH-series, Sony VENICE / FX-series, Atomos, SmallHD, and more.
100% Private — files never leave your deviceDrop your LUT file(s) here
or click to browse — .cube, .3dl, .csp, .spi3d, .mga, .lut, .png (HaldCLUT) and more — up to 20 MB
Choose File⚠ Panasonic .vlt: grid locked to 17³.
Sony .spi3d: 17³, 33³ or 65³ grids.
.cube 1D: samples the neutral diagonal of the 3D LUT.
⚠ Autodesk Lustre .3dl: 10-bit, R-slowest/B-fastest.
Downsampling uses the selected interpolation method below. Upsampling always uses tetrahedral.
0% = full LUT · 100% = original luma, LUT chroma.
0% = off · 100% = max smooth (20 Laplacian passes).
Blends warm skin-hue nodes (∼25°) back toward identity.
100% = normal · 0% = identity · >100% = extrapolated.
Soft-clips out-of-gamut nodes toward the luminance axis, preserving Hue.
Decode footage → Rec.709 → LUT → re-encode. Preview updates in real time.
Conversion Quality Report
—Convert a LUT to see the quality report.
Split: 50%
| Format | Applications | Max Grid (typical) | Notes |
|---|---|---|---|
| .cube (3D) | DaVinci Resolve, Premiere, FCPX, AE | 33³ or 65³ | Universal standard |
| .cube (1D) | Resolve, Adobe | 4096 nodes | Single channel curves |
| .3dl (Flame) | Autodesk Flame, Nuke, AE | 17³ or 33³ | 10-bit, mesh header |
| .3dl (Lustre) | Autodesk Lustre | 17³ or 33³ | 10-bit, R-slow/B-fast |
| .csp | Scratch, Fusion | 33³ | Supports 1D pre-shaper |
| .vlt | Panasonic VariCam, GH5/GH6/S5II | 17³ strictly | 17³ only — locked |
| .spi3d | Sony VENICE / FX3 / FX6 / FX9 | 17³, 33³, 65³ | Explicit r g b indices |
| .spi1d | Sony / OCIO pipeline | N nodes (1D) | 1D → 3D diagonal expand |
| .mga | Kodak / Pandora | 17³ or 33³ | 12-bit integers |
| .lut | Generic Monitor / Pandora | 17³ or 33³ | Plain float triplets |
| .cdl / .cc / .ccc | ASC CDL, DaVinci, Baselight | 33³ (computed) | Slope · Offset · Power · Sat |
| .png (Hald CLUT) | Photoshop, Affinity Photo, GIMP, darktable | 64³ (Hald level 8) | Image-based LUT |
Supported Read (Input) Formats
* Select Tetrahedral interpolation for highest accuracy when downscaling (e.g. 65³ → 17³).
Practical guidance for common conversion scenarios — choose formats, grid sizes, and interpolation with confidence.
Choosing the Right Grid
Use 17³ for in-camera monitoring LUTs. Use 33³ for general NLE grading — good balance of accuracy and file size. Use 65³ only when maximum fidelity is required (e.g. archival or soft-proof masters).
Tetrahedral vs Trilinear
Choose Tetrahedral when downscaling the grid (e.g. 65³ → 17³) — it preserves saturated colour accuracy and avoids gamut overshoot. Trilinear is suitable for same-size format conversions where the grid is unchanged.
Panasonic & Sony Cameras
Panasonic VariCam, GH5/GH6, and S5 II accept .vlt at exactly 17³ only — other grid sizes are rejected. Sony VENICE, FX3, FX6, and FX9 use .spi3d, supporting 17³ and 33³ on most models.
Converting Multiple Files
Drop several LUT files at once to activate Batch Mode. All files convert with the same output format, grid, and interpolation. Click Convert All & Download ZIP to receive a single archive ready to deploy.
Reading the Metrics
A ΔE 2000 < 1.0 is imperceptible under normal viewing; above 3.0 may be visible on critical material. Check the Neutral Axis chart — R, G, B lines should track the diagonal closely. Any divergence indicates a colour cast on greys.
HaldCLUT for Photo Editors
Export as HaldCLUT PNG (level 8, 64³) to apply your LUT in Photoshop (Camera Raw), Affinity Photo, GIMP, or darktable — all support image-based LUT formats natively.
Baking CDL Grades to a Cube
Import a .cdl, .cc, or .ccc file to bake ASC CDL (Slope · Offset · Power · Saturation) into a standard 33³ cube — useful for converting primary-grade XML metadata into a portable LUT for any pipeline.
Your Files Stay Local
All processing — parsing, interpolation, and rendering — runs entirely inside your browser. No file data, colour values, or metadata is ever transmitted to any server, making it safe for confidential production material.