Free JSON to CSV Converter Online
nstantly flatten and convert JSON objects into spreadsheet-ready CSV rows with our secure, browser-based JSON to CSV converter.
Convert JSON to CSV
Maximum file size: 5 MB.
CSV Output
Options
Your CSV will appear here
Paste JSON or upload a file to convert into CSV.
Columns
Preview opens first 50 rows.
What Is a JSON to CSV Converter?
A JSON to CSV converter is a free online developer tool that transforms structured JSON data into a comma-separated values (CSV) format, giving developers and data analysts a reliable resource they can access anytime. It helps data analysts and developers convert records, arrays, or objects into spreadsheet-ready rows directly in the browser. By mapping and flattening nested keys into readable columns, the tool keeps your formatting workflow extremely simple and fast. It takes your raw payload, processes it locally, and generates a clean CSV file that you can easily review, edit, or import into applications like Microsoft Excel or Google Sheets.
How It Works
How to Use the JSON to CSV Converter
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Add the JSON
Paste your JSON payload into the input area or securely upload your .json file.
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Flatten the fields
The tool automatically processes your data, flattening nested keys into dot notation to create clean column headers.
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Choose and export
Review your columns and rows in the preview, turn specific columns on or off, and copy or download the final CSV.
Features
Built for spreadsheet-ready CSV output
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Flatten nested fields
Automatically maps deeply nested JSON keys into readable, structured CSV columns using dot notation.
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Preview the rows
Check the first few rows of your converted data in a live table preview before exporting.
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Choose columns
Easily select or deselect specific detected columns to customize your final spreadsheet output.
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Export Fast & Secure
Copy the CSV data to your clipboard or download it as a file instantly in one step.
Frequently Asked Questions
Quick answers to common questions about using this tool.
Is my data uploaded or processed locally? +
Normal conversions run securely in your web browser. Your JSON files and text are read and processed locally up to the configured file size limit, ensuring complete data privacy.
What JSON formats are supported? +
The tool seamlessly accepts a top-level array, a single JSON object, or common wrapped arrays (such as data, items, rows, results, or records).
Can the tool handle nested objects? +
Yes. Nested JSON objects are automatically flattened into column names using a specific separator, making them perfectly readable in spreadsheet applications.
Do I need an account to convert JSON to CSV? +
No signup or registration is required. Our JSON to CSV converter is completely free to use for all your data formatting and export needs.