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CSV → JSON Converter

Convert CSV data to a JSON array of objects with automatic header detection.

Runs 100% in your browser — nothing is uploaded

About this tool

The CSV to JSON converter parses comma-separated values with automatic header detection (first row = keys) and outputs a JSON array of objects. Uses papaparse for robust CSV parsing that handles quoted fields, embedded commas, and newlines within fields per RFC 4180.

Supports common delimiters (auto-detected) and handles edge cases like quoted fields containing the delimiter character, embedded newlines, and escaped quotes. The output is formatted JSON ready for use in code or APIs.

Frequently asked questions

Are delimiters other than comma supported?
Papaparse auto-detects the delimiter. It handles comma (,), tab, semicolon (;), and pipe (|) separated values automatically.
What happens with quoted fields?
Per RFC 4180, fields enclosed in double quotes can contain commas, newlines, and embedded double quotes (escaped as two double quotes). These are parsed correctly.

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