Convert CSV to Excel
Turn one or more CSV files into an Excel workbook — one sheet per file. Runs on your device; your data is never uploaded.
Need more than this?
GUI Hub Data handles files too big for Excel (millions of rows), stacks many CSVs into one table, removes duplicates, converts Excel ↔ CSV ↔ Parquet ↔ JSON, and lets your AI query the data locally (“which region sold the most?”). 3 free uses per tool; $9 once.
Private by design
The work happens in this browser tab using open-source code loaded from jsDelivr. Your files are not sent anywhere.