Temporary storage
Originals are removed after processing.
Convert XLSX to CSV online
Upload a supported file up to 1 GB, choose a compatible output, and download the result. Files are removed automatically after processing.
File converter
Upload a XLSX file
3–10 minute downloads
The exact time is based on storage use when each result is ready, then remains fixed.
Compatible outputs
Only valid targets are offered for each input.
Format guide
About XLSX to CSV conversion
FileFy reads the XLSX content with its matching parser and writes a compatible CSV result. Complex layout may be simplified.
CSV keeps only the first worksheet
FileFy writes the first XLSX worksheet as UTF-8 CSV. Additional sheets are not included because CSV has no worksheet structure.
Cells are exported as their displayed text values. Formulas, styles, merged cells, charts, data types, and workbook features are not carried into the CSV file.
How it works
- Select a XLSX file.
- FileFy uploads and converts the file.
- Download the CSV result.
File handling
The original upload is removed after processing. Each result receives a storage-based expiry period of 3 to 10 minutes when processing completes. Once assigned, that period is not shortened afterward.