CSV to JSON Converter

Convert CSV text into a JSON array in the browser. The first row is treated as the header for a predictable output structure.

Private browser-side processing
Input CSVCSV
The first row is used as the header. Missing headers are treated as an error.
3 lines · 72 bytes
Output JSONJSON
No action has been run yet.
0 lines · 0 bytes

About the CSV to JSON converter

Typical usage

It works well for temporary conversion of spreadsheet exports or business data before importing the result into another tool.

Header-first output

The beta version expects the first CSV row to define field names, which keeps the JSON structure easy to understand and avoids ambiguous output.

Related converters

JSON Formatter
Free JSON pretty printer with readable syntax error messages.
YAML to JSON
Convert YAML into JSON in the browser. Useful for config files, automation definitions, and quick data inspection.
JSON to YAML
Convert JSON to YAML with a browser-only workflow. Paste input, run the conversion, and copy the output without extra setup.
CSV to Markdown
Convert CSV into a GitHub Flavored Markdown table directly in the browser. Ideal for READMEs, issues, and docs.

Related articles

What is CSV? Understanding Comma-Separated ValuesA practical guide to the CSV format covering structure, header rows, quoting rules, and when to convert CSV to JSON.How to Convert CSV to JSON: A Step-by-Step GuideLearn how to convert CSV files to JSON format using browser tools, command-line utilities, and programming languages.