JSON Converter - Convert JSON, YAML, XML, CSV, TOML and Properties
This online JSON converter turns structured data between JSON, YAML, XML, CSV, Query String, TOML and Java properties. Everything runs in your browser, so API payloads, configuration files and sample data never leave your device.
What You Can Convert
JSON to YAML
Turn API payloads into human-readable configuration files for Kubernetes, CI pipelines, Docker Compose and application settings.
JSON to XML
Convert modern JSON structures into XML for SOAP services, legacy integrations and enterprise data exchange workflows.
JSON to CSV
Export arrays or object lists into spreadsheet-friendly CSV for analysis, reporting and quick data inspection.
Query String, TOML and Properties
Move data between URL parameters, TOML configuration and Java properties without switching tools or uploading files.
How to Use
Choose the source format
Select JSON, YAML, XML, CSV, Query String, TOML or Properties on the left, then paste or import your data.
Choose the target format
Select the output format on the right. Use Options when you need indentation, CSV delimiter or XML root settings.
Convert and export
Click the arrow button to convert. Copy the result, export it as a file or swap the editors for reverse conversion.
Format Notes
JSON
Best for APIs and browser applications. It preserves nested objects, arrays, booleans, numbers and null values clearly.
YAML
Best for configuration files. It is easier to read by hand, but indentation and quoting rules still matter.
CSV
Best for tabular data. Nested objects should be flattened before exporting to spreadsheets or BI tools.
FAQ
Is my data uploaded?
No. Conversion happens locally in your browser. The tool does not send your pasted data to a server.
Why does CSV conversion work best with arrays?
CSV is a table format. A JSON array of objects maps naturally to rows and columns, while deeply nested objects may need flattening.
Can I convert through JSON as an intermediate format?
Yes. When a direct pair is not available, the tool converts the source format to JSON first, then converts JSON to the target format.