Convert XLSX to CSV Online

4.9 (164)

The fastest way to **convert XLSX to CSV** online. Extract data from Excel spreadsheets into clean, comma-separated values. Secure, free, and no installation required.

Secure & PrivateFast ProcessingFree to Use

Professional XLSX to CSV Conversion

Excel's XLSX format is the industry standard for spreadsheets, but it's not always the best format for data processing or system integration. Developers, data scientists, and system administrators often need to convert XLSX to CSV to import data into databases, run analysis scripts, or feed into legacy systems that don't support complex Excel files. Our tool provides a robust, client-side solution for this need, ensuring you get clean, usable CSV data without the overhead of desktop software or the security risks of cloud uploads.

Simple Conversion Process

Upload Excel File

Drag and drop your Excel workbook (.xlsx) onto the page. We support files from Excel 2007 and all newer versions.

Automatic Conversion

Our engine reads the active sheet and transforms rows and columns into comma-separated text, handling special characters and formatting automatically.

Save CSV

Download the resulting file to your local machine. You can then open it in a text editor, import it into a database, or use it in your data pipeline.

Why Professionals Choose Us

Speed & Efficiency

Don't wait for server uploads or queue times. Our local processing means instant results, even for large files with thousands of rows.

Universal Compatibility

The generated CSV files are standard text files, compatible with MySQL, PostgreSQL, Python Pandas, R, and virtually any other data processing tool.

Privacy Compliance

Perfect for handling sensitive data like customer lists or financial records, as no data transmission occurs over the internet. You remain in full control.

No Dependencies

Works on any device with a web browser—Windows, Mac, Linux, Chromebooks, and tablets. No plugins or software installation required.

Clean Output

We handle escaping and quoting automatically (e.g., for fields containing commas), ensuring your CSV is valid and ready for immediate use.

Ideal Use Cases

Database Imports

Prepare your Excel data for bulk import into SQL (MySQL, PostgreSQL) or NoSQL (MongoDB) databases which typically prefer CSV format.

Data Science & Analysis

Quickly turn spreadsheets into raw data for machine learning models, statistical analysis in R, or data manipulation in Python Pandas.

System Integration

Bridge the gap between modern Excel workflows and legacy systems or APIs that only accept simple text-based inputs.

FAQ: How to Convert XLSX to CSV

How do I convert an XLSX file to CSV?

1. Upload your **.xlsx** file by dragging it onto the page or selecting it from your computer. 2. The tool automatically parses the spreadsheet content. 3. Click 'Download CSV' to save the result to your device.

Is this tool free?

Yes, our **XLSX to CSV converter** is completely free with no usage limits. You can convert as many files as you need without paying a cent.

Do I need Microsoft Excel installed?

No. You can convert Excel files to CSV directly in your browser without needing Microsoft Office, Excel, or any other software installed. This is great for Linux or Chromebook users.

Can I convert large files?

Yes, our tool is optimized to handle large datasets efficiently. Because it runs locally, it avoids the slow upload and download times associated with server-based converters.

Is my data safe?

Yes. All processing happens on your device using JavaScript. Your sensitive business data, financial records, or personal information never leaves your computer.