Convert JSON Arrays to CSV via API
Convert JSON arrays of objects to CSV format via REST API. Send your data inline as a JSON body with configurable delimiter. Perfect for data pipelines, ETL workflows, and spreadsheet exports.
# Convert JSON array to CSV
curl -X POST \
https://api.convertfilefast.com/v2/convert/json-to-csv \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d "{"data": [{"name": "Alice", "age": 30}, {"name": "Bob", "age": 25}], "delimiter": ","}" \
-o output.csv
# HTTP 200 OK — Content-Type: text/csvAdvantages
Why use our API?
Complete and reliable solution for integration in any tech stack.
JSON Body Request
Send your JSON array directly in the request body with Content-Type: application/json. No file upload required.
Configurable Delimiter
Choose comma, semicolon, tab, or any custom delimiter for your CSV output. Adapt to any spreadsheet format.
Automatic Headers
CSV headers are automatically generated from the keys of your JSON objects. No manual column mapping needed.
Data Pipeline Ready
Chain this endpoint into ETL pipelines, data export workflows, or reporting systems with minimal setup.
n8n Automation
Use the HTTP Request node in n8n to convert JSON data from any source to CSV and save to Google Sheets or Drive.
Zero Storage
JSON data is processed in memory and the resulting CSV is returned immediately. No data is stored on our servers.
Start Converting JSON to CSV
Get your API key and convert JSON arrays to CSV in seconds. Free plan includes 10 conversions per month.
No credit card. 10 free conversions on Free plan.