CSV-X.com

Free Data & CSV Tools Online

Convert, view, and transform your data with powerful browser-based tools. No file uploads to servers — everything runs locally in your browser for maximum privacy and speed.

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All Tools

CSV Viewer

Upload and view CSV files as interactive, sortable tables with pagination.

CSV to JSON

Convert CSV files to JSON format instantly. Download the result as a .json file.

JSON to CSV

Convert JSON arrays to CSV format. Download the result as a .csv file.

CSV to Excel

Convert CSV files to Excel XLSX format with one click. Download instantly.

Excel to CSV

Convert Excel XLSX files to CSV format. Fast and free in-browser conversion.

JSON Formatter

Format, beautify, and minify JSON data. Validate and fix your JSON online.

Base64 Encoder

Encode text to Base64 or decode Base64 strings back to text instantly.

Coming Soon

Data Analyzer

AI-powered data analysis tool. Upload data and get instant insights.

Why CSV-X.com?

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100% Private

Your files never leave your browser. All processing happens client-side using WebAssembly and JavaScript. No data is sent to any server.

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Instant Results

No waiting for server responses. Conversions happen instantly in your browser, even for large files with thousands of rows.

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Completely Free

All tools are free to use with no limits. No sign-up required, no watermarks, no file size restrictions.

The Complete Data Toolkit for Developers and Analysts

CSV-X.com provides a comprehensive suite of free online data tools designed for developers, data analysts, and anyone who works with structured data. Whether you need to quickly view the contents of a CSV file, convert data between formats like CSV, JSON, and Excel, or format and validate JSON, our browser-based tools make it fast and easy. Every tool on CSV-X.com processes your data entirely within your web browser, ensuring complete privacy and eliminating the need to upload sensitive information to third-party servers.

Our CSV Viewer lets you open any CSV file and explore it as a fully interactive table with column sorting and pagination. The format conversion tools support seamless transitions between CSV, JSON, and Excel XLSX formats, making it simple to prepare data for different applications, APIs, or spreadsheet software. The JSON Formatter helps you beautify, minify, and validate JSON data with syntax highlighting, while the Base64 Encoder and Decoder handles text encoding tasks that developers encounter daily. All tools are built with modern web technologies including Papa Parse for robust CSV parsing and SheetJS for Excel compatibility, ensuring reliable results every time.