JSON to CSV
Convert JSON to CSV online in your browser. Transform JSON arrays into spreadsheet-ready CSV with proper escaping. No upload, no account, no server processing.
Runs locally in your browser. Your input is not uploaded to DevToolMate servers.
Developer Quick Tips
- Paste JSON arrays or upload a local file. Headers auto-generate from all keys; each object becomes one row for Excel or Google Sheets.
- Convert JSON to CSV for APIs, configs, and logs. Nested objects serialize as JSON strings inside cells, preserving structure without flattening.
- Download as data.csv or copy output directly into Excel, Google Sheets, or any spreadsheet app. All special characters are properly escaped.
- No server upload, no account required. Processing stays entirely in your browser with instant conversion using Ctrl/Cmd + Enter.
- How to convert JSON to CSV: paste your data, click convert, download. Works for any JSON array or single object in seconds.
Frequently asked questions
How do I convert JSON to CSV online?
Paste your JSON array of objects into the editor or upload a local.json file. The tool generates CSV headers from the union of all keys and converts each object to a row. Press Ctrl/Cmd + Enter or click convert, then copy or download the CSV output.
How to convert JSON to CSV for Excel?
Paste or upload your JSON, then download the CSV as data.csv. Open it directly in Excel or Google Sheets. The output is properly quoted and escaped for spreadsheet import, so all special characters and newlines stay safe.
What is a JSON to CSV converter used for?
A JSON to CSV converter transforms structured JSON data into spreadsheet format. Developers use it to export API responses, configuration files, and logs into Excel or Google Sheets for analysis, reporting, or data sharing without writing code.
How does JSON to CSV handle nested objects and arrays?
Nested values are serialized as JSON strings inside CSV cells. For example, {"user": {"name": "Alice"}} becomes a cell containing {"name": "Alice"}. This preserves structure without flattening and keeps your CSV import-ready for Excel or Google Sheets.
How are CSV headers generated from my JSON?
Headers are derived from the union of all keys across every object in your JSON array. If one row has {"id", "name"} and another has {"id", "email"}, the CSV will have three columns: id, name, email. Missing values appear as empty cells.
Does JSON to CSV upload my data to a server?
No. JSON to CSV runs entirely in your browser. Your input is never uploaded to DevToolMate servers or any external service. Processing stays local to your device for the current session.
What input formats does JSON to CSV accept?
An array of objects is ideal for conversion. A single object becomes one row. Primitives in an array get value and index columns. Paste JSON directly or upload a local.json file within browser size limits.
Related tools
- CSV to JSON: Convert CSV to JSON online, free and private. Handles quoted fields, duplicate headers, Python and JavaScript exports. Browser-local, no upload, no account.
- JSON Formatter: Online JSON formatter - beautify and format JSON in your browser with adjustable indentation and key sorting. Free, no upload, no account.