{ } → 📊 JSON to CSV

Convert JSON data to CSV format. Handles nested objects and arrays. Auto-detects columns. Free, private — all processed in your browser.

JSON Input:

CSV Output:

Flatten nested objects Include headers

All processing in-browser · No upload to server · Your data stays private

About JSON to CSV Converter

Convert JSON arrays to CSV format. Handles nested objects with dot-notation column headers. Perfect for exporting API responses to Excel or Google Sheets. All processing in your browser.

Nested Object Support

Flattens nested JSON objects into dot-notation columns. Deep structures become readable spreadsheet columns.

Auto-Detect Headers

CSV headers generated automatically from JSON keys. All columns detected — no manual mapping needed.

Instant Conversion

Paste JSON, get CSV instantly. Download as .csv file ready for Excel, Google Sheets, or database import.

Private Data

JSON data processed locally. No server uploads. Sensitive API responses and data stay on your device.

📋 Common Use Cases

Exporting API Data to Spreadsheets

Convert a JSON array from a REST API endpoint into a CSV file for analysis in Excel or Google Sheets without writing conversion scripts.

Preparing Data for Database Import

Flatten complex nested JSON from a data dump into tabular format that matches relational database table schemas.

Sharing Data with Non-Technical Teams

Turn JSON exports into row-and-column spreadsheets so marketing or operations colleagues can work with the data in familiar tools.

Migrating Between Platforms

Convert JSON-formatted data exports from one SaaS platform into CSV format accepted by another service during a migration.

🪜 How to Use This Tool

Paste your JSON array
Paste a valid JSON array of objects where each object becomes a row in the output CSV.

Preview the column mapping
Review the auto-detected headers and confirm nested fields are flattened the way you expect.

Adjust flattening options
Toggle how deeply nested objects are expanded and whether array values become separate columns or stay as text.

Download the CSV
Click download to save the converted file or copy the raw CSV text to paste into a spreadsheet application.

Frequently Asked Questions

Is this data tool free?▼

Yes. All data tools are completely free. No signup needed.

Is my data sent to a server?▼

No. All data processing happens in your browser. Your JSON, CSV, SQL, and text data never leaves your device.

Can these handle large files?▼

JSON formatter and CSV tools comfortably handle files up to ~10MB in browser. Performance depends on your device for larger datasets.