Free JSON to CSV Converter
Convert JSON objects or arrays into clean CSV spreadsheets instantly. Supports custom delimiters, batch multi-file conversion, nested data flattening, and live table preview.
JSON Input
CSV Output
CSV Data Table Preview
0 Records| # | No Data Loaded |
|---|---|
| Paste JSON input or upload JSON files above to view formatted spreadsheet preview. | |
About the Free JSON to CSV Converter Tool
This tool allows you to convert JSON data and files into organized CSV spreadsheets with ease. This tool is completely private, and your files and data never leave your device. It is 100% free to use, requires no signup or login, and offers unlimited use.
How to Convert JSON to CSV in 4 Easy Steps
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Paste your JSON string into the code editor or upload a
.jsonfile. -
Configure formatting options such as delimiter (Comma, Tab, Semicolon) and nested object flattening.
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Review the auto-generated live table preview and formatted CSV code output.
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Click Download CSV to save your file or click Copy to copy the spreadsheet text to your clipboard.
Features & How It Works
100% Private & Secure
All data transformation happens locally on your device. This tool is completely private, and your files and data never leave your device.
Automatic Nested Object Flattening
Automatically flattens deeply nested data structures into clean, organized dot-notation spreadsheet columns.
Flexible Separators & Delimiters
Export to standard comma-separated CSV, tab-separated TSV, or custom pipe/semicolon formats for Excel and Google Sheets.
Multi-File Batch Conversion
Convert multiple JSON files simultaneously and download all formatted CSV files together in a convenient ZIP archive.
Live Table & Output Preview
Inspect your converted records in an interactive spreadsheet table before downloading, ensuring complete data accuracy.
One-Click Download & Copy
Download your formatted CSV file instantly or copy the raw table text straight to your clipboard with a single click.
Frequently Asked Questions
How does the converter handle nested objects or arrays?
Our converter automatically flattens nested key-value pairs using dot notation (e.g. person.name.first) to ensure no data is lost during conversion.
Can I open the generated CSV file directly in Microsoft Excel?
Yes! The output is encoded with standard UTF-8 text formatting, allowing seamless import into Microsoft Excel, Google Sheets, Apple Numbers, and databases.
Is there a maximum file size limit for JSON input?
No, there are no artificial file size or record limits. You can convert large JSON datasets with tens of thousands of items with unlimited free use. Because conversion runs locally on your device, capacity is only limited by your device's available memory.
Is this JSON to CSV converter 100% free to use?
Yes! Our online JSON to CSV converter is 100% free to use with no signup or login required. You can convert unlimited JSON files and records with no usage limits.
Is my JSON data safe and private when converting?
Absolutely. This tool is completely private, and your files and data never leave your device. All parsing runs locally on your machine with zero server uploads.
Can I convert multiple JSON files simultaneously in batch mode?
Yes! You can drop or select multiple .json files at once. The converter processes each file into its own CSV table and lets you download all files together in a convenient ZIP archive.
What JSON formats and data structures are supported?
The tool supports JSON arrays of objects, single objects, and nested trees. When nested object flattening is enabled, inner properties are converted into clean dot-notated column names automatically.