Roughness ↔ Smoothness Converter
Invert the data exactly—no contrast guesswork and no resampling.
Convert roughness to smoothness or smoothness to roughness by inverting every channel value, preview the result, and download a lossless PNG.
Drop a roughness, smoothness, or gloss map
Inspect supported images and ZIP entries locally in your browser. PLAYTEX AI compares the maps as a set, labels measured checks separately from visual heuristics, and shows the evidence behind each finding.
- Roughness/smoothness filename evidence
- Grayscale-channel consistency
- Exact 1 − value conversion
- Alpha preservation
- Unity MaskMap smoothness guidance
Pricing: The focused check and listed repair on this page are free. Complete Material Preflight requires Starter or higher.
How do you convert smoothness to roughness?
For normalized scalar maps, roughness equals one minus smoothness. In 8-bit pixels that means each channel becomes 255 minus its original value. The converter preserves dimensions and alpha while exporting a lossless PNG.
How the check works
- Upload the source files. Choose the real material maps or a ZIP so dimensions, channels, filenames, and decoded pixel samples can be checked together.
- Review measured evidence. Open each finding to see the affected map, observed value, confidence, and proposed repair instead of a generic pass or fail.
- Export deliberately. Choose an engine target, keep or disable individual repairs, and download renamed maps plus an import-settings report.
Confidence matters: dimensions, alpha ranges, vector length, edge differences, and memory are measured directly. Map meaning, baked lighting, useful resolution, and normal orientation can need filenames, a target choice, or artist review.
Roughness Smoothness Converter FAQ
Are uploaded textures sent to a server?
No. Supported images and ZIP entries are decoded, sampled, and repaired locally in the browser. Closing the page clears the working set unless you download an export.
Is glossiness the same as smoothness?
In common game-material workflows, glossiness and smoothness both describe the inverse of roughness, though a specific shader can remap the response.
Does conversion add or remove material detail?
No. It only inverts existing values. Contrast, frequency, dimensions, and spatial detail remain unchanged.
Primary technical references
Last reviewed . Engine importers and validation rules can change; the cooked project remains authoritative.