XLSX to CSV Converter

Convert Excel XLSX files to CSV format. 100% free, secure, and processed entirely in your browser.

Configuration

Include header row

CSV Delimiter(点击选择)

XLSX Input

Upload Excel File

Upload your XLSX or XLS file to convert it to CSV format

CSV Output

How to Use

How to Use:

Upload your Excel file (XLSX or XLS format)
Select which sheet from your workbook to convert
Configure CSV options like delimiter and header settings
Download the resulting CSV file to your device

Features:

100% free with no registration required
Private and secure - all processing happens in your browser
Support for multiple sheets in Excel workbooks
Various CSV delimiter options (comma, semicolon, tab, pipe)
Instant download of converted CSV files

Best Free Online Excel XLSX to CSV Converter Tool

About Our Excel XLSX to CSV Tool

Transform your Excel XLSX files with our powerful online Excel to CSV converter. This free XLSX to CSV converter tool makes it easy to convert Excel data to CSV format instantly, perfect for data integration, system imports, and cross-platform compatibility.

Our Excel to CSV converter online tool handles all Excel formats and converts them to clean, properly structured CSV files. Whether you need to convert XLSX to CSV for database imports, data processing, or system integration, our Excel CSV converter provides professional results with just one click.

Why Use Our Excel XLSX to CSV Converter?

Free Excel to CSV converter - No cost or registration required
Fast XLSX to CSV conversion - Process data instantly
Advanced Excel to CSV features - Custom delimiters and header options
Best Excel to CSV tool - Trusted by professionals worldwide
Professional CSV output - Clean, properly formatted text files
Secure Excel to CSV processing - All conversion happens locally

How to Convert Excel XLSX to CSV - Complete Tutorial

Upload Excel File

Upload your Excel XLSX file. Our tool automatically processes the file and prepares it for conversion to CSV format.

Configure Settings

Choose delimiter type (comma, semicolon, tab), specify if you want to include headers, and select which worksheet to convert if multiple are present.

Get CSV Output

Instantly get your data converted to a clean, properly formatted CSV file. Copy to clipboard or download as a .csv file.

Common Use Cases for Excel XLSX to CSV Conversion

Data Import

Convert Excel XLSX files to CSV format for importing into databases, CRM systems, or other software that requires CSV input.

Data Processing

Transform Excel data into CSV for processing with programming languages like Python, R, or other data analysis tools.

Cross-Platform Compatibility

Convert Excel files to CSV to ensure compatibility with various operating systems and applications that may not support XLSX.

Web Applications

Transform Excel spreadsheets into CSV for use in web applications, JavaScript libraries, or online data visualization tools.

Advanced Excel XLSX to CSV Converter Features & Capabilities

Smart Excel Processing

Multi-sheet support - Convert any worksheet from your Excel file
Header handling - Options for including or excluding headers
Large file support - Handles files with thousands of rows
Format preservation - Maintains data integrity during conversion

CSV Output Options

Custom delimiters - Choose comma, semicolon, tab, or other separators
Clean formatting - Well-structured CSV output
Copy or download - Flexible output options
Browser-based processing - No software installation needed

XLSX vs CSV: Understanding the Difference

Aspect	XLSX	CSV
File Format	Binary, structured spreadsheet	Plain text, comma-separated
Data Types	Numbers, text, dates, formulas	Text only (strings)
Formatting	Rich formatting, colors, styles	No formatting support
Multiple Sheets	Multiple worksheets supported	Single sheet only
File Size	Larger due to features	Smaller, more compact
Compatibility	Requires Excel or compatible software	Universal, any text editor

Frequently Asked Questions

How do I convert xlsx to CSV?

Converting XLSX to CSV is simple with our free online tool. First, upload your Excel (.xlsx) file by clicking the upload button or drag and drop it into the designated area. If your Excel file has multiple worksheets, you can select which specific sheet you want to convert. The tool will automatically process your Excel data and generate a clean CSV file. You can then download the CSV file instantly. The conversion preserves all your data while converting it to the universal CSV format that works with any application or database.

What is the difference between CSV and xlsx files?

CSV (Comma-Separated Values) files are simple plain text files that store tabular data with values separated by commas. They contain no formatting, support only text data, and work with any text editor or application. XLSX files are Excel's modern binary format that supports rich formatting, multiple data types (numbers, dates, formulas), cell styling, charts, and multiple worksheets. While XLSX files offer advanced spreadsheet features and better data preservation, CSV files are smaller, more universally compatible, and ideal for data exchange between different systems. Converting XLSX to CSV makes your data accessible to any application while maintaining the core data structure.

Can Excel convert JSON to CSV?

While Excel has some limited capability to import JSON data, it's not the best tool for converting JSON to CSV directly. For converting JSON to CSV, it's better to use our dedicated JSON to CSV converter tool instead. However, if you have JSON data in an Excel file, you can first convert the Excel file to CSV using our XLSX to CSV converter. For the most efficient JSON to CSV conversion, we recommend using our specialized JSON to CSV tool which handles complex JSON structures and arrays properly, ensuring clean, properly formatted CSV output from your JSON data.

How do I save an xlsx file as a CSV with commas?

To save an XLSX file as a CSV with commas, use our online XLSX to CSV converter which automatically generates properly comma-separated CSV files. Simply upload your Excel file, and our tool will create a standard CSV format with comma delimiters. While you can also save as CSV from within Excel (File > Save As > CSV format), our online tool ensures consistent comma separation regardless of your system's regional settings, which can sometimes cause Excel to use semicolons or other delimiters instead of commas. Our converter guarantees proper comma-delimited CSV output every time, making it perfect for data import into databases, applications, or other systems that specifically require comma-separated values.

Professional Excel XLSX to CSV Conversion Made Easy

Our XLSX to CSV converter stands out as the best online Excel to CSV tool available today. Whether you're a developer needing to convert XLSX to CSV for data processing, or a data scientist working with Excel datasets, our Excel to CSV converter online provides the reliability and features you need.

With support for multi-sheet Excel files and flexible CSV output options, our XLSX to CSV converter tool handles everything from simple spreadsheets to complex workbooks. The Excel CSV converter maintains data integrity while providing clean, properly formatted CSV output for your specific requirements.

Choose our free Excel to CSV converter for your next data conversion project and experience the difference that a professional-grade XLSX to CSV tool can make. Fast, accurate, and always free - this is the Excel to CSV converter online that data professionals trust.

Start Converting Now