CSV to JSON & JSON to CSV Converter
Convert CSV/TSV to JSON and JSON back to CSV with delimiter detection, header mapping, and interactive table preview.
How to Use CSV to JSON & JSON to CSV Converter
1. Enter or Paste Input
Paste your raw data, code payload, or text document directly into the editor.
2. Instant In-Browser Processing
Formatting, validation, or transformation algorithms execute locally with zero network latency.
3. Copy or Export Output
One-click copy formatted outputs or download clean generated files immediately.
How This Utility Works
A high-performance bidirectional tabular data converter. Parses RFC 4180 CSV and TSV formats with quote-escaping, automatically detects delimiters (comma, semicolon, tab, pipe), transforms rows into JSON objects or 2D matrices, and renders an interactive scrollable table preview. 100% client side with zero network activity.
Tokens, internal JSON payloads, and source code are parsed strictly inside your local browser runtime. Zero bytes are uploaded to remote servers.
Frequently Asked Questions
Does it support comma-separated values inside quotes?
Yes! It strictly adheres to RFC 4180 standard rules, correctly parsing commas, quotes, and line breaks enclosed in double quotes.
Can it convert Tab-Separated Values (TSV) from Excel or Google Sheets?
Yes! The auto-detection engine automatically detects tab characters when copying and pasting directly from spreadsheet software.
What JSON formats can it export?
You can export as an array of keyed objects ({ name: "Alice" }) or as a 2D matrix array ([["name"], ["Alice"]]).
Convert CSV to JSON in Shell
Run directly in your terminal without installing external heavy dependencies
$ python3 -c 'import csv, json, sys; print(json.dumps(list(csv.DictReader(open(sys.argv[1]))), indent=2))' data.csvStreams any CSV file and prints formatted JSON array of row objects.
$ npx -y csvtojson data.csv > data.jsonZero-config npm package execution to convert large CSV files directly to JSON.