How can I convert XLSX to CSV online?

Simply upload your Excel file, preview it, and click Convert to download your CSV file instantly.

Does this converter work offline?

Yes, it works fully within your browser and does not upload files to any server.

Can I convert multiple Excel sheets?

Currently, it converts only the first sheet. For multi-sheet export, save each sheet separately in Excel before uploading.

Does it support XLS as well as XLSX?

Yes, both .xls and .xlsx file formats are supported for conversion.

Are my Excel files stored online?

No, your files are processed entirely in your browser. No data is uploaded or stored on our servers.

What happens to formatting and formulas?

Only raw cell data is exported to CSV; Excel formatting and formulas are not included.

Can I edit the data before conversion?

Yes, you can preview and manually edit table cells before generating the CSV output.

Is the conversion fast?

Yes, conversion happens instantly in your browser without waiting for uploads or network requests.

Can I copy CSV output directly?

Yes, use the Copy CSV button to copy the entire converted output to your clipboard.

Is the XLSX to CSV converter free to use?

Yes, it is completely free and does not require registration or login.

Excel To CSV Converter

Upload an Excel file, preview it, and convert it into CSV format.

📂 Upload Excel

No file uploaded yet. Upload an Excel file to preview its content here.

✅ Conversion Successful!

CSV Output Preview

Copy or download the generated CSV below.

Convert XLSX to CSV Online – Free Excel to CSV Converter

Easily convert your Excel spreadsheets into clean, shareable CSV files using our secure browser-based XLSX to CSV converter. Designed for simplicity and accuracy, this free tool lets you transform Excel XLSX to CSV instantly without uploading data anywhere. Whether you’re preparing datasets, importing into applications, or just cleaning spreadsheets, this tool gives you fast, private, and reliable conversions.

About the XLSX to CSV Converter

The Convert XLSX to CSV tool extracts your spreadsheet data and structures it into comma-separated text that can be used with databases, scripts, and automation systems. Since CSV files are lightweight and compatible with nearly all platforms, this online XLSX to CSV converter makes your workflow faster and more efficient — all within your browser.

How to Use the XLSX to CSV Converter

Click on 📂 Upload Excel and choose your .xlsx file.
Wait for the spreadsheet preview to appear in your browser window.
Press 🔄 Convert Excel to CSV to generate the comma-separated output.
Use the 📋 Copy CSV button or download it directly with 💾 Export .csv.

That’s it — your Excel file is now ready in universal CSV format, compatible with any database, data analysis tool, or application that supports structured text.

Why Convert Excel XLSX to CSV?

CSV files are universally supported and far more efficient for storing tabular data. By converting your Excel XLSX to CSV, you remove unnecessary formatting while keeping pure, structured data intact. This helps in integrating with APIs, databases, or custom applications without compatibility issues.

Key Features

⚡ Quick and Simple: Instantly convert Excel XLSX to CSV format in one click.
🔒 Privacy First: Works directly in your browser with zero server uploads.
🧾 Clean Output: Produces accurate, well-formatted CSV with all rows and columns preserved.
📋 Live Preview: Edit and inspect your spreadsheet before exporting.
💾 Offline Support: Works even when you’re not connected to the internet.

Benefits of Using the Online XLSX to CSV Tool

This online XLSX to CSV tool saves time and keeps your files secure. Unlike other converters, it doesn’t store or transmit your data — everything happens locally in your browser. It’s ideal for analysts, developers, students, and professionals who need clean, portable data formats.

Supported Excel Formats

Our converter supports both modern .xlsx and older .xls file formats. It also processes Excel files generated from Google Sheets, LibreOffice Calc, and other spreadsheet tools without breaking formulas or column alignment.

Common Uses

Preparing data imports for databases like MySQL, PostgreSQL, or SQLite.
Converting Excel reports into plain-text CSV for sharing or storage.
Cleaning raw data before analysis or automation.
Generating dataset exports compatible with software and APIs.

Frequently Asked Questions about XLSX to CSV Data Conversion

1. What does the XLSX to CSV converter do?

This tool instantly converts Microsoft Excel files (.xlsx) into standard comma-separated values (.csv) format. It preserves your spreadsheet’s data structure while removing unnecessary formatting, ensuring the output works with any database or application.

2. Is my Excel data safe during conversion?

Yes. All processing takes place entirely within your browser. No data is uploaded or stored on servers, so your Excel files remain fully private and secure.

3. Can I convert large Excel files to CSV?

Yes, the converter can handle large Excel files efficiently. However, extremely large spreadsheets may take a few extra seconds depending on your browser and system memory.

4. Does the converter support older .xls files?

Absolutely. In addition to modern .xlsx spreadsheets, the tool also supports the older .xls format, making it compatible with legacy Excel files.

5. How does this tool handle multiple sheets in Excel?

The converter automatically uses the first worksheet from your Excel file by default. You can save individual sheets separately if your file contains multiple tabs.

6. Will my formulas or formatting be included in the CSV output?

No. CSV is a plain-text format and doesn’t support Excel formulas, styles, or colors. Only the raw cell values are exported to ensure a clean data structure.

7. Can I edit the data before converting it to CSV?

Yes. Once your Excel file is uploaded, the tool displays a live editable preview. You can modify cell values before exporting the final CSV file.

8. Is the tool free to use?

Yes, it’s completely free and always will be. You can convert unlimited Excel files without registration, hidden costs, or ads.

9. Does this XLSX to CSV converter work offline?

Yes. Once the page loads in your browser, you can disconnect from the internet and continue using it offline without any loss of functionality.

10. What browsers does this converter support?

It works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera, both on desktop and mobile devices.