JSON Converter
Switch between JSON, YAML, XML, CSV, and TypeScript in one click. Paste any format and we'll figure out what it is automatically. Customize how the output looks—spacing, key sorting, delimiters—and convert back and forth as much as you need. Everything runs locally in your browser, so your data stays private.
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Input (JSON)
Output (YAML)
Powerful JSON Conversion Features
Everything you need to convert between multiple data formats quickly and accurately.
Multiple Format Support
Convert between JSON, YAML, XML, CSV, and TypeScript interfaces. Switch formats with one click or swap input and output to reverse the conversion.
Auto Format Detection
Paste any format and the tool figures it out automatically—JSON, YAML, XML, or CSV. No need to manually select. Just paste and convert.
TypeScript Interface Generation
Generate TypeScript interfaces directly from your JSON data. Perfect for creating type definitions for APIs or data models in TypeScript projects.
Format-Specific Options
Control how your output looks with format-specific settings. YAML indentation, XML root names, CSV delimiters, TypeScript styling. Fine-tune everything to match your project's style.
Conversion History
Automatically saves your last 50 conversions with timestamps, formats, and success status. Review past conversions and track your work.
File Upload & Download
Upload files in any supported format and download converted results with proper file extensions and MIME types. Works with large files.
How to Convert Between Formats
Convert your data in three simple steps with automatic format detection.
Add Your Data
Paste your data into the input editor or upload a file. The tool auto-detects the format (JSON, YAML, XML, CSV) and suggests the correct source format.
Select Target Format
Choose your desired output format from the dropdown (JSON, YAML, XML, CSV, or TypeScript). Adjust format-specific settings in the Settings panel if needed.
Convert & Download
Click Convert to transform your data. The output appears instantly in the right panel. Copy to clipboard or download as a file with the proper extension.
Frequently Asked Questions
What formats can I convert between?
You can convert between JSON, YAML, XML, CSV, and TypeScript interfaces. All conversions go through JSON as an intermediate format, so you can convert from any format to any other format (except TypeScript can only be an output format).
How does auto-detection work?
The tool analyzes your input and identifies the format based on structure and syntax. If it detects a format different from your selection, it shows a suggestion to switch. You can accept the suggestion with one click.
Can I customize the conversion output?
Yep! Click Settings for format-specific options. For YAML, pick indentation and key sorting. For XML, set custom root names. For CSV, choose delimiters and headers. For TypeScript, tweak code styling and interface names.
Is my data stored or sent to a server?
No. All conversions happen locally in your browser using JavaScript. Your data never leaves your device. Conversion history and settings are saved only in your browser's local storage.