Can I export multiple sheets?

CSV supports one sheet at a time. You can convert additional sheets by selecting them and downloading again.

Formulas are evaluated by Excel when the file was saved, and the resulting values are exported.

Is my spreadsheet uploaded?

No. Parsing runs entirely in your browser using SheetJS.

Data & Developer

Excel to CSV Converter

Convert XLSX or XLS spreadsheets to CSV.

Files never leave your device — all processing is in-browser.

Drop files here

or click to browse from your device

Max 100 MB per file

Turn any Excel workbook into a CSV file. If your workbook has multiple sheets, pick which one to export. Formulas are automatically converted to their calculated values.

How to use the Excel to CSV tool

STEP 1
Upload an .xlsx or .xls file.
STEP 2
Choose which sheet to export.
STEP 3
Download the CSV — ready for databases, scripts or import into other apps.

What is Excel to CSV?

Excel to CSV is a free online converter that turns Excel files into CSV files directly in your browser. It is designed as a fast, zero-friction alternative to installing desktop software or trusting your files to an anonymous upload server.

FameConvert runs entirely in your browser. There is no signup, no queue, no watermark and no ten-file daily limit — the whole tool loads once and then works offline. Because the conversion happens on your device, output files are ready the moment the browser finishes processing.

Why use Excel to CSV?

Most online converters require you to upload the file to a random server, sit through an ad-heavy queue and then download a watermarked result. Excel to CSV takes the opposite approach:

Preserves the source — your original Excel file is untouched, so you can convert as many times as you like.
100% private — files are processed on your device and never uploaded to a server.
Free forever — no accounts, no watermarks, no size caps and no hidden usage limits.
Instant results — output downloads the moment the browser finishes; no waiting in a queue.
Works offline — once the page has loaded, the tool keeps working without a network connection.
No install — nothing to download, update or hand admin rights to; any modern browser is enough.

Key features

Drag-and-drop upload with instant client-side validation for file type and size.
Batch support — process multiple files in one go, then download them individually or as a ZIP.
Clear file-size and MIME-type checks so you know immediately if a file is not supported.
Built-in conversion history so you can re-download recent results without repeating the work.
Shareable links that preserve your tool settings, perfect for teammates and support requests.
Responsive design that works equally well on desktop, tablet and mobile browsers.

When Excel to CSV is useful

Move data between spreadsheets, databases and data-science notebooks with zero friction.
Prepare files for email attachments, client hand-offs or CMS uploads that only accept certain formats.
Archive assets in a lossless, widely-supported format so they remain readable years from now.
Batch-convert an entire folder before importing into another application.
Convert on a locked-down work laptop where installing new desktop software is not allowed.
Handle sensitive documents that must never leave the device for compliance reasons.

About the formats

Excel (Microsoft Excel (XLSX)) — Excel (XLSX) is the world's most popular spreadsheet format. It stores rows, columns, formulas and formatting in a zipped Office Open XML package, making it the standard for financial models, reports and everyday data work.

CSV (Comma-Separated Values) — CSV is the simplest possible tabular format — one row per line, cells separated by commas. Its plain-text nature makes it universally importable into spreadsheets, databases and data-science tools.

Best of Excel: Rich formulas and formatting, Universal in business.
Best of CSV: Universal support, Text-based and diff-friendly, Streamable.

Tips for the best results

Convert on a modern browser (Chrome, Edge, Firefox, Safari) for the fastest results — old browsers lack some of the underlying APIs.
For very large batches, close other heavy tabs so the browser can dedicate more memory to the conversion.
Keep an original copy of your source file until you have opened the output and confirmed it looks correct.

Is it private and safe?

Yes. Excel to CSV is a fully client-side tool. When you drop a file into the upload area it is decoded in your browser's memory, converted with JavaScript running on your device, and the result is offered as a direct download. No copy of the file is sent to FameConvert, uploaded to cloud storage or logged in a database — you can even switch off your network after the page loads and the tool will continue to work.

This makes FameConvert a good fit for legal contracts, medical scans, financial statements, ID documents and any other file you would not want passing through an unknown server.