How to Convert Multiple HED Files to DGN?
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 HED files
Start reaConverter and load all the .hed files you intend to convert into .dgn. The software supports multiple HED conversion and processes all files locally on your computer.
Select HEDs from a folder or by drag-and-dropping them directly into the reaConverter window.

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

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

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