Free Online JSON to CSV

JSON-to-CSV conversion takes an array of objects and writes them as a spreadsheet — one row per object, one column per (optionally dotted) key.

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How to Use This Developer Tool

  1. Paste a JSON array of objects into the input area.
  2. Pick a delimiter (comma, tab, or semicolon) and toggle the header row.
  3. Read the CSV output below.
  4. Click Copy or Download to save as a .csv file.

What Is a JSON to CSV?

JSON is what your API returns; CSV is what your team opens in Excel, Google Sheets, or imports into Postgres with `\copy`. Bridging the two is mostly schema work: each distinct property path (`user.address.city`) becomes a column header, and each object in the input array becomes a row.

This converter handles flat arrays, arrays of objects, and one level of nested objects via dot-notation. Values containing commas, quotes, or newlines are quoted with double quotes per RFC 4180 — exactly what Excel and pandas expect on import. Pick comma, tab (TSV), or semicolon (European locales) as the delimiter; toggle the header row off if you're appending to an existing file.

Frequently Asked Questions

How does JSON to CSV conversion work?
The converter flattens your JSON structure into rows and columns. Each object becomes a row, and nested properties are flattened into column headers with dot notation.
Can I convert nested JSON to CSV?
Yes, nested objects are flattened. Nested keys become column names like 'user.address.city'. Arrays are joined with semicolons by default.
What CSV format is used?
Output uses standard CSV with comma delimiters. Values containing commas, quotes, or newlines are quoted. Compatible with Excel, Google Sheets, and most spreadsheet applications.

Published by the WeGotEveryTool team. We build and test every tool in-house and update pages when the underlying spec, formula, or recommendation changes.

Reviewed: May 2026. Disclaimer: this tool is provided as-is for general informational use. For decisions with material consequences (medical, legal, financial, security) verify results against a qualified professional source.

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