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CSV ↔ JSON Converter

Convert spreadsheets to JSON arrays — or JSON arrays back to CSV. Auto delimiter, header detection, RFC-4180 safe.

CSV input
Output

How to convert CSV and JSON

  1. 1
    Pick a directionChoose CSV → JSON or JSON → CSV using the tabs above the editor.
  2. 2
    Paste your dataDrop a CSV table or a JSON array. Set header and delimiter if needed.
  3. 3
    Copy or downloadCopy the formatted output or download it as a .json or .csv file.

Frequently asked questions

Does it auto-detect the CSV delimiter?
Yes. Leave the delimiter empty and we'll sniff comma, tab, semicolon, or pipe based on row consistency.
Can I convert JSON arrays of objects to CSV?
Yes. The keys of the first object become the header row; nested values are stringified safely.
Are quoted CSV cells handled correctly?
Yes. We follow RFC 4180 — embedded quotes, line breaks, and the delimiter inside quoted fields are preserved.
Does it work with TSV (tab-separated)?
Yes. Set delimiter to tab or paste TSV with auto-detect on.
Is the data sent anywhere?
Conversions run on our server but nothing is stored — your input is processed in memory and discarded.
Is there a row limit?
Free tier handles tens of thousands of rows comfortably. Very large files may hit the request size limit.

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