No need to fuss! Here’s How to Convert CSV to XLSX Without Opening Excel – Just Use CMD!

Process Feels Slow for Large Files

If you’re working with a large CSV file (e.g., more than 100MB), the conversion process may feel slow or even fail due to memory limitations. This is natural, especially if you’re using a low-spec computer or have many other apps open at the same time.

Solution:

  • Consider splitting a CSV file into smaller parts using scripts or tools like split in WSL (Windows Subsystem for Linux).
  • Run the conversions individually, then merge the results in Excel if needed.
  • Make sure your computer has enough storage space and at least 8GB of RAM for handling large files.

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