CSV (Comma-Separated Values) is a plain text file format that stores tabular data — rows and columns — with each value separated by a comma. It is the most common format for data export from databases, Excel, and web applications.

What is the difference between CSV and Excel (XLSX)?

CSV is plain text — simple, universal, no formatting. Excel (XLSX) is a binary format that supports multiple sheets, formulas, cell formatting, charts, and rich data types. CSV is ideal for data transfer; Excel is ideal for analysis and presentation.

What is JSON and why convert CSV to JSON?

JSON (JavaScript Object Notation) is a structured data format widely used in web APIs and applications. Converting CSV to JSON is needed when feeding data to web applications, APIs, or databases that accept JSON format.

Back to Tools

Free CSV to JSON & Excel Converter - Convert Data Files Online

Convert CSV to JSON, JSON to CSV, Excel to CSV and more. Free online data converter for developers and analysts. No signup required.

CSV/JSON/Excel Converter

Select File to Convert

Supports CSV, Excel, JSON

What is a CSV Converter?

A CSV converter is a tool that transforms data files between different formats — most commonly between CSV (Comma-Separated Values), JSON (JavaScript Object Notation), and Excel (XLS/XLSX). Different systems, databases, and applications use different data formats: web APIs typically use JSON, databases export CSV, and business users prefer Excel. A converter bridges these formats, eliminating the need for manual copy-paste or custom scripts. ToolsWallet's converter processes data entirely in your browser — your data is never uploaded to any server.

Supported Conversions

CSV → JSON

Convert tabular CSV data to JSON array format for use in web apps and APIs.

JSON → CSV

Flatten JSON array data into a CSV spreadsheet for Excel analysis or database import.

CSV → Excel (XLSX)

Convert a CSV file to a proper Excel workbook with column formatting.

Excel (XLSX) → CSV

Export an Excel spreadsheet as a plain CSV for use in databases and scripts.

JSON → Excel

Convert a JSON data array directly to an Excel file for business reporting.

CSV → TSV

Convert comma-separated to tab-separated values for tools that require TSV format.

Why Convert Data Formats?

For Developers

• Feed CSV data exports into REST APIs that need JSON
• Convert API JSON responses to CSV for Excel analysis
• Prepare data for database import/export
• Test applications with data in the correct format

For Business & Data Analysts

• Convert Google Sheets exports (CSV) to Excel
• Transform e-commerce product data between formats
• Prepare data for Power BI, Tableau, or Python pandas
• Convert GST report CSVs to Excel for analysis

Frequently Asked Questions

What is a CSV file?

CSV (Comma-Separated Values) is a plain text format that stores tabular data. Each line is a row, and values within a row are separated by commas. It is universally supported by databases, spreadsheet apps, and programming languages.

What is the difference between CSV and Excel?

CSV is plain text — no formatting, no formulas, no multiple sheets. Excel (XLSX) is a rich binary format that supports cell formatting, formulas, multiple sheets, and charts. CSV is for data exchange; Excel is for data analysis.

Why would I convert CSV to JSON?

Web APIs and modern applications typically use JSON for data transfer. If you have data in CSV format that needs to be sent to or processed by an API or JavaScript application, converting to JSON is required.

Is my data safe?

Yes. All conversion happens in your browser using JavaScript. Your data files are never uploaded to any server.

Can I convert large files?

The tool handles typical data files up to a few MB. Very large files (>10MB) may be slow to process in the browser.