How do I convert CSV to XLSX?

Drop your CSV file onto the converter above, make sure XLSX is selected, and click Convert. When it's done, download the XLSX file — it usually takes a few seconds.

Is it safe to convert CSV to XLSX here?

Yes. Your file is sent over an encrypted connection to an isolated sandbox that's created for your job only, then both the original and the result are deleted automatically.

Is the CSV to XLSX converter free?

Yes. Cloud conversions like this one use credits, and you get free credits every day (3 without an account, 10 with a free account).

Will converting CSV to XLSX reduce quality?

No — XLSX preserves the content of your CSV file as faithfully as the format allows.

Can I convert multiple CSV files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

Can I convert XLSX back to CSV?

Yes — use our XLSX to CSV converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.

XLSX→CSV CSV→PDF CSV→DOCX XLS→XLSX ODS→XLSX CSV→EPUB Numbers→XLSX CSV→TXT TSV→XLSX CSV→HTML CSV→Markdown CSV→XLS CSV→ODT CSV→RTF CSV→ODS CSV→LaTeX CSV→IPYNB CSV→FB2 CSV→TSV CSV→reST CSV→Typst CSV→AsciiDoc CSV→Org CSV→MediaWiki CSV→OPML CSV→DocBook CSV→Textile CSV→JATS CSV→Man PNG→JPG JPG→PNG PNG→WebP JPG→WebP WebP→PNG WebP→JPG HEIC→PNG HEIC→JPG MP4→MP3 PNG→JPEG JPG→JPEG JPEG→PNG JPEG→JPG PNG→PDF JPG→PDF PDF→PNG PDF→JPG HEIC→WebP MP4→WebP PDF→DOCX DOCX→PDF JPEG→WebP WebP→JPEG PNG→GIF JPG→GIF GIF→PNG GIF→JPG MP4→MOV MOV→MP4 WebP→PDF HEIC→JPEG WebP→GIF GIF→WebP HEIC→PDF MP3→WAV WAV→MP3 JPEG→PDF PDF→JPEG SVG→PNG SVG→JPG HEIC→GIF MOV→MP3 MP4→GIF GIF→MP4 JPEG→GIF GIF→JPEG PNG→AVIF JPG→AVIF AVIF→PNG AVIF→JPG MP3→M4A M4A→MP3 GIF→PDF SVG→PDF PNG→SVG JPG→SVG PDF→SVG SVG→WebP MOV→WebP MP4→WAV MP4→WebM WebM→MP4 WebP→AVIF AVIF→WebP WebP→SVG SVG→JPEG MP4→MKV MKV→MP4 HEIC→AVIF MP4→M4A JPEG→AVIF AVIF→JPEG JPEG→SVG MOV→GIF GIF→MOV WebM→MP3 AVIF→PDF MP3→FLAC FLAC→MP3 MP4→AVI AVI→MP4 MKV→MP3 GIF→AVIF AVIF→GIF SVG→GIF GIF→SVG WebM→WebP MOV→WAV XLSX→PDF EPUB→PDF PDF→EPUB MOV→WebM WebM→MOV MKV→WebP PNG→ICO JPG→ICO ICO→PNG ICO→JPG MP3→AAC WAV→M4A AAC→MP3 M4A→WAV MP4→FLAC AVI→MP3 MOV→MKV MKV→MOV MOV→M4A DOCX→EPUB EPUB→DOCX PDF→TXT DOC→PDF TXT→PDF WebP→ICO ICO→WebP PPTX→PDF AVI→WebP WebM→GIF GIF→WebM SVG→AVIF MOV→AVI AVI→MOV HEIC→ICO MP4→AAC PNG→TIFF JPG→TIFF TIFF→PNG TIFF→JPG MP3→OGG OGG→MP3 MKV→GIF GIF→MKV

CSVXLSX

Convert CSV to XLSX

Free and secure. CSV files are converted in an isolated cloud sandbox and deleted automatically.

Isolated cloud sandbox
No watermark
Batch & ZIP download

How to convert CSV to XLSX

1
Add your CSV files
Drag and drop CSV files onto the converter, paste them, or click to browse. You can add several at once.
2
Choose XLSX
XLSX is already selected. Open Options if you want to change quality, size or metadata.
3
Convert
Click Convert. Files are processed in a secure cloud sandbox and are usually ready in seconds.
4
Download your XLSX
Download each XLSX file, or everything at once as a ZIP.

CSV vs XLSX

From

CSV · Comma-Separated Values

CSV is plain-text tabular data with values separated by commas — the universal import/export format for spreadsheets and databases.

Type: Spreadsheet
Extension: .csv
MIME: text/csv
Best for: data exchange between spreadsheets, databases and apps

Open standard

All CSV conversions →

XLSX · Microsoft Excel Workbook

XLSX is the modern Excel workbook format with formulas, multiple sheets, charts and formatting.

Type: Spreadsheet
Extension: .xlsx
MIME: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Best for: spreadsheets in Excel, Google Sheets and Numbers

Open standard

All XLSX conversions →

Need it the other way around? Convert XLSX to CSV.

Related conversions

Convert CSV to other formats

Convert other formats to XLSX

CSV to XLSX: frequently asked questions

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