JSON to CSV Converter
Convert JSON arrays and nested objects to clean, spreadsheet-ready CSV in your browser — no server, no signup, and no character limits. Automatically flattens deeply nested properties using dot notation (e.g., address.city), ideal for processing API responses, exported database records, or config files before importing into Excel or Google Sheets. Choose your delimiter, toggle header rows, and download RFC 4180-compliant CSV instantly.
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Convert JSON Data to CSV Instantly
JSON is the standard data format for web APIs and modern applications, while CSV remains the universal format for spreadsheets, databases, and data analysis tools. Our converter bridges these two formats, letting you transform JSON data into clean, structured CSV in real-time.
Simply paste your JSON data or upload a file, and watch as the tool instantly converts it to CSV. Configure delimiters, flatten nested objects, and control quoting. All processing happens locally in your browser.
How to Convert JSON to CSV
Input Your JSON Data
Paste JSON data directly, or upload a JSON file. Drag and drop is also supported. Arrays of objects, arrays of arrays, or single objects all work.
Configure Options
Choose your delimiter, toggle headers, enable nested object flattening, or force-quote all fields. Options take effect in real-time.
Get Your CSV
The CSV output updates instantly. Copy it to your clipboard or download as a .csv file. Preview the data in the table below.
Powerful Conversion Features
Real-Time Conversion
See your CSV output update instantly as you type or modify JSON data. No button clicks needed.
Flatten Nested Objects
Automatically flatten nested JSON objects using dot notation. Deep structures become clean, flat CSV columns.
File Upload & Drag Drop
Upload JSON files directly or drag and drop them. Large files up to 10MB are supported.
Data Preview Table
See a visual table preview of your data to verify the conversion before downloading.
Flexible Delimiters
Choose between comma, semicolon, tab, or pipe delimiters to match your target application.
100% Private
All processing happens in your browser. No data is uploaded to any server.
Use Consistent Keys
Ensure all objects in your JSON array have the same keys. Missing keys produce empty CSV cells but conversion still works.
Flatten Deep Nesting
Enable "Flatten Nested" to convert {"a":{"b":{"c":1}}} into a flat column "a.b.c" in the CSV output.
Use Format Button
Click Format to prettify minified JSON, making it easier to read and verify before conversion.
Check the Preview
Always verify the data preview table to see exactly how your JSON was mapped to CSV columns and rows.