JSON to CSV Converter
Convert JSON data to CSV format.
About This Tool
JSON to CSV Converter is a free online tool that transforms a JSON array of objects into a properly formatted CSV file in seconds. It automatically detects all object keys as column headers, handles nested objects by flattening them with dot notation, and supports comma, semicolon, and tab delimiters. No server, no upload — all conversion runs in your browser.
The converter is built to handle real-world JSON payloads, including API responses, database exports, and configuration objects. Objects with inconsistent keys across the array are supported — missing fields produce empty cells rather than errors. The output is immediately ready to open in Excel, Google Sheets, or any data processing tool.
JSON to CSV is most frequently used by data analysts processing API responses, developers exporting database query results, and anyone who needs to import structured JSON data into a spreadsheet or BI tool without writing a script.
How to Use
- 1
Paste your JSON array of objects into the input field.
- 2
Choose your preferred delimiter: comma, semicolon, or tab.
- 3
Download the converted CSV file or copy the output.
- 4
Toggle 'Include headers' off if your target system already has column names.
- 5
Open the downloaded CSV in Excel, Google Sheets, or any data tool.
Features
Flexible Delimiters
Export CSV with comma, semicolon, or tab delimiters to match your target application.
Auto Header Detection
Automatically extracts JSON object keys as CSV column headers.
Nested Object Support
Nested JSON objects are flattened using dot notation (e.g., address.city).
Browser-Only Processing
All conversion happens in your browser. Your data never leaves your device.
Common use cases
- ›Export REST API responses to CSV for analysis in Excel or Google Sheets.
- ›Convert database query results in JSON format to a spreadsheet-friendly CSV.
- ›Prepare JSON datasets for import into business intelligence tools like Tableau or Power BI.
- ›Transform JSON configuration files or log data into tabular format for reporting.
Read our guide
JSON to CSV Converter — Complete Guide →FAQ
What JSON format is supported?
An array of objects with consistent keys. Nested objects are flattened using dot notation.
Is my data secure?
Yes, all conversion happens in your browser. No data is sent to any server.
How are nested JSON objects handled?
Nested objects are flattened with dot notation. For example, {"address":{"city":"Seoul"}} becomes a column called 'address.city'.
What delimiters are available?
Comma (standard CSV), semicolon (common in European locales), and tab (TSV format compatible with Excel paste).
What happens if JSON objects have different keys?
All unique keys from all objects are collected as columns. Missing values produce empty cells in the CSV output.