CSV to JSON Converter — Convert CSV Data to JSON Online

Transform CSV data into JSON format instantly. Supports custom delimiters, header detection, and minified output — all processed entirely in your browser with no data sent to any server.

Delimiter First Row as Headers Minify Output

CSV Input

JSON Output

Frequently Asked Questions

What is CSV?

CSV (Comma-Separated Values) is a simple text format for storing tabular data. Each line represents a row and values within each row are separated by a delimiter — most commonly a comma. CSV files are widely supported by spreadsheet software like Excel, Google Sheets, and database tools.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for both humans to read and machines to parse. It uses key-value pairs and arrays to represent structured data and is the standard format for APIs, configuration files, and web applications.

How to convert CSV to JSON?

Paste your CSV data into the input area, select the appropriate delimiter, and click "Convert to JSON." If your first row contains column names, enable "First Row as Headers" to use them as JSON keys. Otherwise, the converter will use numeric indices (0, 1, 2, etc.) as keys.

What delimiter should I use?

The most common delimiter is the comma, which is the default CSV standard. Use semicolons for European-formatted CSV files (where commas are decimal separators), tabs for TSV files exported from databases, or pipes for data that may contain commas in field values.