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JSON to CSV Converter

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Convert JSON to CSV live — no button. Automatically finds the array of objects to convert (and tells you which field it used), and flattens nested objects and arrays with one consistent, predictable rule.

How it works

  1. Paste a JSON array of objects, or an object containing one
  2. The tool finds the right data automatically and shows a note explaining what it used
  3. CSV appears live below — nested objects flatten as user.name, arrays as roles[0], every time

Frequently asked questions

Does it update as I type?

Yes — no button to click. The CSV re-renders live as you paste or edit your JSON.

My JSON is an object, not an array — will it still work?

Yes. It searches your object for a field containing an array of objects and uses that automatically, telling you which field it picked. If none is found, it converts the object itself as a single row.

How are nested objects and arrays handled?

Always the same way: nested objects flatten with dot notation (e.g. user.name), and arrays flatten with index notation (e.g. roles[0]) — so results are predictable no matter how deep the nesting goes.

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Related tools

JSON Tree Viewer JSON Tree Viewer JSON Formatter & Validator JSON Formatter & Validator CSV Doctor CSV Doctor

From the blog

Most JSON-to-CSV converters grab the first array they find — even if it's the wrong one. Ours actually looks for the right data.
dev

Most JSON-to-CSV converters grab the first array they find — even if it's the wrong one. Ours actually looks for the right data.

We checked convertcsv.com directly — it's a multi-step 'Step 3: Generate output' flow, not live. And a documented failure mode in this category is picking the first array in a file even when it's just metadata. Ours searches for an actual array of objects, tells you which field it used, and flattens nested data with one predictable rule.

2026-08-30

Update history

  • 2026-08-30 Added: a cover image — used as the card thumbnail, social share image, and blog title image.
  • 2026-08-30 Launched: live JSON-to-CSV conversion (no button), automatic detection of the array of objects to convert (with a note on which field was used), consistent dot/index flattening for nested objects and arrays, RFC 4180 CSV escaping.