Convert XLSX to CSV
Free, instant, and secure online converter. Upload your .xlsx file and receive a crisp .csv result in seconds.
Need the opposite conversion? Convert CSV to XLSX →
How to convert XLSX to CSV
Upload Your File
Click the upload zone or drag and drop your .xlsx file anywhere on the area.
Start Converting
Hit Convert and our server will process your file instantly with high fidelity preservation.
Download Result
Your .csv file is ready in seconds! Click download. Files auto-delete in 6 hours.
XLSX vs CSV: Comparison
| Attribute | XLSX (.XLSX) | CSV (.CSV) |
|---|---|---|
| Category | document | document |
| MIME Type | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | text/csv |
| Description | XLSX is the modern Microsoft Excel spreadsheet format. | CSV stores tabular data as comma-separated plain text, readable by almost any spreadsheet tool. |
XLSX to CSV: What You Should Know
CSV strips away formulas, formatting, multiple sheets, and charts, keeping just the raw cell values as plain comma-separated text — which is exactly what most data-import tools, scripts, and databases actually want instead of a full spreadsheet file.
- Only the active/first sheet is exported — if your workbook has multiple tabs, convert the one you need or split them first.
- Formulas are converted to their calculated values, not the formula itself, since CSV has no concept of formulas.
- Great for importing spreadsheet data into another app, a script, or a database that expects plain CSV rather than an Excel file.
About These Formats
About XLSX files
XLSX is the modern Microsoft Excel spreadsheet format.
About CSV files
CSV stores tabular data as comma-separated plain text, readable by almost any spreadsheet tool.
Frequently Asked Questions
How do I convert XLSX to CSV?
Upload your .xlsx file using the box above, or drag and drop it in. We'll automatically convert it to .csv format — just click download when it's ready.
Is it free to convert XLSX to CSV?
Yes. Converting XLSX to CSV is completely free, with no watermarks, no signup, and no limit on how many files you convert.
Is it safe to convert files here?
Yes. Files are processed securely and automatically deleted from our servers a few hours after conversion. We never share or view the contents of your files.
What is a xlsx file?
XLSX is the modern Microsoft Excel spreadsheet format.
What is a csv file?
CSV stores tabular data as comma-separated plain text, readable by almost any spreadsheet tool.