JSON to CSV Converter — Flatten Nested Objects, Up to 50 MB
Paste a JSON array and get a downloadable CSV with flattened nested objects. Custom delimiters and files up to 50 MB. Opens directly in Excel. 100% browser-based.
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Frequently Asked Questions
What JSON structure is required?
JSON must be an array of objects with consistent keys. Each object becomes a row, and keys become column headers.
How are nested objects handled?
Nested objects are flattened with dot notation (e.g., 'user.name' becomes a column header).
Can I choose the delimiter?
Yes, you can choose from comma, semicolon, tab, or pipe delimiters. Comma is the standard for most applications.
Will it work with Excel?
Yes, CSV files open directly in Excel, Google Sheets, and other spreadsheet applications.
What's the file size limit?
The tool handles JSON files up to 50MB efficiently. All processing happens in your browser.