How to Convert Multiple ACC Files to X3D?
1. Download and Install reaConverter
reaConverter is quick to download, install and launch. This standalone software is extremely efficient in managing a wide range of batch conversions. reaConverter is incredibly powerful and boasts an extensive variety of features.
2. Load your ACC files
Start reaConverter and load all the .acc files you intend to convert into .x3d. The software supports multiple ACC conversion and processes all files locally on your computer.
Select ACCs from a folder or by drag-and-dropping them directly into the reaConverter window.

3. Select X3D as output format
Pick the X3D as output format and choose the destination folder where you want to save new .x3d files.

4. Start ACC to X3D conversion
Then simply press Convert button and your conversion will begin in no time!

Once the conversion is complete, you can find your X3D files in the destination folder you selected.