Data Format Converter
Paste data in any format — JSON, CSV, YAML, Markdown table, or XML — and convert it to any other format instantly.
About the Data Format Converter
Our free data format converter lets you paste data in any common format and convert it to any other in one click. Supported formats: JSON (arrays and objects), CSV (comma-separated values with a header row), YAML (using js-yaml), Markdown tables (pipe-separated), and XML. Paste your data and the tool automatically detects the input format, then click a target format button to convert. Downloads are available in the correct file extension. Conversions that require tabular data (CSV and Markdown table output) work best when the input is an array of flat objects — the tool shows a clear error if the structure is incompatible. Everything runs locally in your browser using JavaScript and the js-yaml library; no data is uploaded.
Features
- Auto-detects input format: JSON, CSV, YAML, Markdown table, or XML
- Converts between all 5 formats in any direction
- Download output as a correctly-named file (.json, .csv, .yaml, .md, .xml)
- Live conversion on paste — updates as you type
- 100% private — all conversion runs locally in your browser
- Errors for incompatible row shapes and malformed CSV
How to use this tool
The Data Format Converter works right in your browser — no signup, no installation. Follow these steps:
- Paste your data (JSON, CSV, YAML, Markdown table, or XML) into the Input box.
- The tool auto-detects the format and shows it as a badge.
- Click the target format button (e.g. "CSV" to convert JSON to CSV).
- Copy the output or click Download to save the file.
Frequently asked questions
What input shapes produce CSV?
CSV output requires a nonempty array of objects. Keys found in any row become columns; missing values become empty cells. Nested objects are serialized as JSON text in their cells.
How does detection work?
Detection uses markers such as JSON brackets, XML angle brackets, Markdown pipes, YAML keys and comma or tab delimiters. Ambiguous or unrecognized input may need another format-specific tool.
Can all information survive every conversion?
No. Formats differ in their data models. Check output carefully, especially nested XML, attributes and Markdown tables.
Is content uploaded?
Parsing and serialization run in the browser.
Using the results
Use the Data Format Converter to transform supported text or data formats in your browser. Review the output before replacing your original, since some conversions change formatting or discard information.