Free Online JSON to CSV Converter

Convert JSON to CSV format instantly. Handles nested objects. Works offline.

JSON Input
CSV Output
Enter JSON to convert

How the JSON to CSV Converter Works

Our converter transforms JSON arrays and objects into properly formatted CSV files. It automatically handles nested objects by flattening them with dot notation, making complex JSON structures spreadsheet-ready.

Automatic Flattening

Nested objects are flattened automatically. For example, a nested address object becomes separate columns like "address.city" and "address.country", preserving all your data in a flat structure.

Privacy First

All conversion happens locally in your browser. Your JSON data is never uploaded to any server, making this tool safe for converting sensitive business data, API responses, or personal information.

Frequently Asked Questions

The converter works best with arrays of objects, where each object represents a row. Nested objects are flattened using dot notation (e.g., "address.city" becomes a column header).

Nested objects are flattened automatically. For example, {name: "John", address: {city: "NYC"}} becomes columns "name" and "address.city". Arrays within objects are joined with semicolons.

Yes! A single object is converted to a CSV with one data row. The object keys become column headers and values become the row data.

All conversion happens locally in your browser using JavaScript. Your JSON data is never sent to any server, making it safe for sensitive or confidential data.

More Free Online Tools

Text Cleaner
Strip formatting, fix quotes, convert case
QR Generator
Create QR codes, download PNG/SVG
Unit Converter
PX to REM, Hex to RGB, Unix to Date
JSON Formatter
Format, minify, validate JSON
Base64 Encoder
Encode and decode Base64
Text Diff
Compare text side by side