JSON to CSV Converter

Convert JSON data to CSV format.

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Features

Smart Flattening

Automatically detects and flattens nested JSON objects into dot-notation columns (e.g., `address.city`).

Dynamic Headers

Scans all records to ensure every unique field is included in the CSV header, even if some records miss keys.

Custom Delimiters

Choose between Comma (,), Semicolon (;), Pipe (|), or Tab (\t) to match your target application requirements.

Instant File Import

Drag and drop or upload large .json files for immediate conversion.

About JSON to CSV Converter

The JSON to CSV Converter is a professional-grade data transformation tool designed to convert complex JSON structures into flat, spreadsheet-ready CSV files. Unlike basic converters, this tool intelligently handles nested objects and arrays, ensuring no data is lost during the conversion process. It features advanced options like Automatic Flattening (converting `user.address.city` into a single column), customizable delimiters (comma, semicolon, pipe, tab), and instant file uploads. Whether you're a developer preparing data for analysis or a data scientist cleaning up datasets, this tool offers a secure, client-side solution that respects your data privacy.

How to Use JSON to CSV Converter

  • 1
    Input Data

    Paste your JSON array or click 'Load JSON' to upload a file.

  • 2
    Customize

    Toggle 'Flatten Nested Objects' and select your preferred delimiter (default is comma).

  • 3
    Convert

    The tool converts automatically as you type. Check the preview for the result.

  • 4
    Export

    Click 'Copy' to grab the text or 'Download' to save it as a .csv file compatible with Excel.

Frequently Asked Questions

Yes. The conversion process runs entirely in your browser. Your JSON data is never uploaded to any server or stored by us.
Use the 'Flatten Nested Objects' option. It converts nested structures (like { user: { name: 'John' } }) into flat column names (user.name) so they fit into a CSV row.
Yes, you can upload large .json files. Since the tool uses your browser's resources, performance depends on your device, but it handles megabytes of data efficiently.
The tool scans your entire dataset to find all unique fields and creates headers for them. If a record is missing a field, that cell will simply be left empty in the CSV.