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How to Convert JSON to CSV Online

Published May 2025 · Updated August 2026 · Toolsyy Team

APIs and exports almost always hand you JSON, but the person who actually needs the data usually wants it in Excel or Google Sheets. Toolsyy’s JSON to CSV Converter turns a JSON array into a clean, spreadsheet-ready CSV file in one click — no signup, no upload, nothing saved anywhere.

Step-by-Step Guide

  1. Paste a JSON array of objects into the input box.
  2. Click “Convert.”
  3. Review the CSV output, or copy it straight to your clipboard.
  4. Paste into Excel, Sheets, or any tool that reads CSV.

FAQ

My JSON is a single object, not an array — what do I do?

Wrap it in square brackets, like [{ "name": "Ada" }], to turn it into a one-row array.

What happens if my objects have different keys?

The converter unions every key it finds across all objects, so rows missing a field just come out blank in that column — nothing breaks.

Can it handle nested objects or arrays?

CSV is flat by nature, so nested values are stringified rather than split into extra columns.

Why Use Toolsyy?

  • Runs entirely in your browser — your data never leaves the tab.
  • Handles mismatched keys and missing fields gracefully.
  • 100% free, with no row limits or account required.

Try it now: Free JSON to CSV Converter