CSV Tools

Convert JSONL to CSV

Convert JSONL (NDJSON / JSON Lines) data into CSV format

Converting the other way? Use the CSV to JSONL converter. Need to convert another format? Search all of our CSV converters.

JSONL Input

CSV Output

CSV output will appear here...

How to Use This Tool

This tool converts JSONL data into CSV. The format — also called NDJSON, JSON Lines, or newline-delimited JSON — has one JSON object per line, and each line becomes one CSV row. Runs directly in your browser.

  1. Provide your JSONL — Paste the text or drop a .jsonl (or .ndjson) file.
  2. Get your CSV — The converted output appears instantly. Copy or save the result.

FAQ

3 questions
Are JSONL, NDJSON, and JSON Lines the same format?
Yes. JSONL (JSON Lines), NDJSON (newline-delimited JSON), and JSON Lines all name the same convention: one complete JSON value per line, separated by newlines. Files usually carry the .jsonl extension — this tool converts them all the same way.
Does this tool upload my data?
No. It runs entirely in your browser. Your data is never sent to a server.
What if some lines have different fields?
The tool collects all unique keys across all lines and uses them as CSV columns. Missing fields are left empty.

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