Convert XLSX to CSV
Free and instant — your XLSX files are processed securely on our servers and deleted right after conversion. Nothing is stored.
How to convert XLSX to CSV
- Step 01
Add your XLSX files
Drop them into the box above or click to browse. You can add several files at once.
- Step 02
Conversion starts instantly
Your file is sent to our servers, converted and deleted right away — no sign-up, no queue, no waiting.
- Step 03
Download your CSV files
Save each file individually or grab them all at once. Done.
Why convert XLSX to CSV?
Converting XLSX to CSV strips a spreadsheet down to raw comma-separated data — the format every database, script and import tool expects. Only the active sheet's values are kept; formulas, formatting and charts are discarded.
XLSX vs CSV at a glance
XLSX is the standard spreadsheet format — rows, columns, formulas and charts in a file every version of Excel and most office suites can open and edit. CSV is the universal data format — plain text rows and commas that every spreadsheet app, database and script can read.
| Property | XLSX | CSV |
|---|---|---|
| Extension | .xlsx | .csv |
| Full name | Microsoft Excel Spreadsheet | Comma-Separated Values |
| First released | 2007 | 1972 |
| Developed by | Microsoft | IBM (early usage); standardized informally over decades |
| Compression | Lossless | Lossless |
| Transparency | No | No |
| Animation | No | No |
| Best for | editable spreadsheets, data tables and financial reports compatible with Microsoft Excel | raw tabular data — imports, exports and data pipelines |
XLSX to CSV — frequently asked questions
Is this XLSX to CSV converter really free?
Yes — completely free, with no sign-up, no watermarks and no daily limits.
Which sheet gets converted?
Only the first (active) sheet. If you need other sheets as CSV, select each one as active before converting.
Will formulas be included?
No — only their calculated, current values are exported. CSV has no concept of formulas.
Is the conversion private?
Your XLSX is sent to our servers, converted using LibreOffice, and the result is returned to you. Your file is deleted immediately after conversion and never stored.
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