# CONVERTOLDMATERIALS Command [GstarCAD 2025](Help%20System/GSTARCAD/2025/Index.md) → [Commands](Help%20System/GSTARCAD/2025/Commands/(Commands).md) → [C](Help%20System/GSTARCAD/2025/Commands/C/(C).md) ## Function Description: This command is used to convert older materials to use the current materials format. Materials that were created in a previous materials format are updated to the current materials format. NOTE: The conversion may not be correct in all cases. ## Command Access: > **Icon:** / > **Menu:** / > **Ribbon:** / > **Toolbar:** / > **Command:** CONVERTOLDMATERIALS > **Alias:** / **Command Prompts: /** --- [Original help](https://www.gstarcad.net/help/GstarCAD_2025_en-US/detail/commandReferences/CONVERTOLDMATERIALS.html) · © Gstarsoft Co., Ltd.