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JSON to CSV

Convert JSON data formats into clean CSV documents.

100% Client-Side Local Execution
Class Name:
Input Data
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Transformed Result
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What is JSON to CSV?

This json to csv converter turns an array of JSON objects into a comma-separated spreadsheet file you can open directly in Excel or Google Sheets. It's built for developers and analysts pulling data from an API response and needing a quick way to export json as csv for reporting or sharing. No coding or spreadsheet formulas required.

Technical Execution

The converter reads the top-level keys from your JSON array's objects to build the CSV header row, then maps each object's values into a corresponding row, flattening simple nested fields where needed. Commas, quotes, and line breaks inside values are automatically wrapped in quotes and escaped so the resulting CSV parses correctly in spreadsheet software.

Zero Data Storage Guarantee

JSON exported from APIs often includes user emails, order details, or other records you don't want passing through a third-party server. This conversion happens entirely in your browser, so the data never leaves your device during the process.

How to Use JSON to CSV (Step-by-Step Guide)

  1. Paste a JSON array of objects into the input panel
  2. The tool detects the object keys and builds CSV columns automatically
  3. Preview the generated CSV rows in the output panel
  4. Fix any irregular records if a warning about mismatched keys appears
  5. Download the result as a .csv file or copy it to your clipboard

Frequently Asked Questions (FAQ)

Q: Can I convert json to csv online if my objects have different keys?
A: Yes, the converter merges all unique keys across objects into the header row and leaves cells blank for objects missing that field.
Q: Does it handle nested JSON objects inside the array?
A: Simple nested objects are typically flattened into dot-notation columns (e.g. address.city); deeply nested structures may need manual adjustment.
Q: What's the difference between json-to-csv and json-to-tsv?
A: They work identically except for the delimiter — CSV uses commas between fields, while TSV uses tabs, which is preferred when your data contains lots of commas.
Q: Is there a row or file size limit?
A: The tool runs in your browser, so very large arrays (hundreds of thousands of rows) may be slow, but typical API responses convert instantly.
Q: How are commas inside a value handled?
A: Any value containing a comma, quote, or line break is automatically wrapped in double quotes per standard CSV formatting rules, so it won't break columns when opened in Excel.
Q: Is this json to csv converter free to use?
A: Yes, fully free with no sign-up or usage caps.
Q: Can I open the exported CSV directly in Excel?
A: Yes, the output follows standard CSV formatting and opens correctly in Excel, Google Sheets, and Numbers.
Q: What if my JSON is a single object instead of an array?
A: A single object converts to a one-row CSV with its keys as headers; for multiple records, wrap them in an array first.
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