# CONVERTOLDMATERIALS Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [C](Help%20System/GSTARCAD/2021/Commands/C/(C).md) The CONVERTOLDMATERIALS command is used to convert the format of previous materials into format of current. ## Command Access: > **Command:** CONVERTOLDMATERIALS ## Function Description: The material of object is created by graphics file formats and it could be converted into current format. **Note:** this kind of conversion may not be correct in all cases. ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/C/CONVERTOLDMATERIALS%20Command.md) · [GstarCAD 2017](../../../2017/Commands/C/CONVERTOLDMATERIALS%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/C/CONVERTOLDMATERIALS%20Command.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/Commands/C/CONVERTOLDMATERIALS%20Command.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/Commands/C/CONVERTOLDMATERIALS%20Command.md)