CSV ↔ JSON Converter

CSV (Comma-Separated Values) and JSON (JavaScript Object Notation) are two of the most common data interchange formats. This tool converts between them with proper handling of quoted fields, special characters, and configurable delimiters.

How the Converter Works CSV→JSON parses each row respecting quoted fields and escape characters. When "first row as headers" is enabled, the first row becomes object keys. JSON→CSV takes an array of objects and outputs CSV with headers from the first object's keys. All processing happens locally in your browser.

Delimiter:

First row as headers

CSV

JSON

Free online tool for converting between CSV and JSON formats. CSV (Comma-Separated Values) is the most common format for tabular data exchange — spreadsheets, databases, and analytics tools all support CSV import and export. JSON (JavaScript Object Notation) is the standard for APIs and web applications.

The converter correctly handles quoted fields containing delimiters, escaped quotes, and multi-line values. You can choose between comma, semicolon, and tab delimiters. The "first row as headers" option controls whether the first CSV row is used as JSON object keys or treated as data.

All processing happens locally in your browser — your data is never sent to any server. Perfect for developers converting API responses to spreadsheet format, data analysts preparing datasets, and anyone who needs quick format conversion between CSV and JSON.