JSON to CSV Converter
Paste a JSON array of objects and convert it to a CSV file — free, instant, browser-based.
JSON Input
How to convert JSON to CSV
- Paste your JSON array into the input box, or upload a .json file.
- Make sure your JSON is an array of objects — each object becomes a row.
- Click Convert to CSV to process the data.
- Copy the result or click Download to save as a .csv file.
When to convert JSON to CSV
JSON is the native format for APIs and JavaScript applications, but many business tools — spreadsheets, CRMs, BI dashboards — expect CSV. Converting JSON to CSV makes your data portable and ready to import into Excel, Google Sheets, or any data pipeline.
Privacy — your data stays local
This tool runs entirely in your browser using JavaScript. Your CSV or JSON data is never sent to any server. Everything is processed locally on your device, making it safe for sensitive records, financial exports, or personal data — though you should always follow your organisation's data policies before using any online tool with confidential files.
Frequently Asked Questions
What JSON structure does this tool expect?
It expects a JSON array of objects — each object represents a row, and its keys become the CSV column headers. Nested objects are not supported; flatten your data first.
Is this tool completely free?
Yes — free with no account, no subscription, and no file size limits beyond what your browser can handle.
Can it handle large files?
Yes, up to the limit of your browser's available memory. Most files under 100 MB convert without issues.
Does it handle quoted fields with commas inside?
Yes. The CSV parser correctly handles RFC 4180-style quoting, including quoted fields that contain commas, newlines, or escaped double-quotes.
Will my data be uploaded anywhere?
No. All processing happens in your browser. Nothing is sent to a server.