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XLSX ➝ CSV100% Client-Side
XLSXCSV

XLSX to CSV Converter

Drop an Excel (.xlsx) file and download its first sheet as comma-separated values. Parsed entirely in your browser — nothing is uploaded.

Drop your XLSX file here, or browse

Drag & drop or click to select from your device

Maximum file size: 50 MB

How to

How to convert XLSX to CSV online for free

  1. 1Select or drop your XLSX file onto the converter — it stays in your browser.
  2. 2Adjust the optional settings, such as quality, size or output options.
  3. 3Click Convert — the file is processed locally on your device.
  4. 4Download your CSV file. It is ready in seconds.
FAQ

Frequently Asked Questions

Answers to the most common questions about Convrs.

How do I convert XLSX to CSV for free?
Select your XLSX file (or drag and drop it), click Convert and download the CSV result. There is no sign-up, no cost, and the file never leaves your browser.
Is XLSX ↔ CSV private and secure?
Yes. XLSX ↔ CSV runs entirely in your browser, so your data never leaves your device — nothing is uploaded or stored on a server.
What makes XLSX different from CSV?
XLSX is Excel's workbook format with sheets, formulas and formatting; CSV is a plain text table. Converting XLSX→CSV keeps the raw data portable.
What is CSV?
CSV stores tabular data as plain text separated by commas, so the same table opens in any spreadsheet editor or database tool.
What is the maximum file size?
50 MB per file. Because everything runs in your device's memory, very large files can slow down or freeze the browser.

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About this tool

XLSX → CSV: a practical, privacy-safe guide

XLSX ↔ CSV takes your XLSX and turns it into CSV — completely inside your browser. No install, no account, no watermark: you select or drop a file, review the settings, and download the result seconds later. Your files stay on your device.

Document conversion matters whenever a file has to cross a boundary — when a client opens a different office suite, an upload form accepts only one format, or a report must print identically everywhere. Doing it in the browser removes the riskiest step: handing your document to an unknown server.

Privacy by construction: XLSX ↔ CSV runs entirely in your device's memory. Your files, text and data are never uploaded, stored or logged by us — there is no server in the path.

Up to 50 MB per file
100% in-browser — nothing is uploaded
No account or sign-up required
Free to use, no watermarks
Runs on desktop and mobile browsers
Your source data is never stored or logged
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