All Tools VerseYAML to JSON Converter
Convert YAML with nested mappings and lists into JSON, with types detected.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Processed locally in your browser. Your data never leaves this tab.
How to Use YAML to JSON Converter
- Paste your YAML. Mappings and lists.
- Convert. The structure becomes JSON.
- Read the result. Indentation becomes nesting.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
What YAML is supported?
Indented mappings and lists with the common scalar types, which covers most configuration files.
Are types detected?
Yes. Numbers, true, false, and null are converted to their JSON types, while quoted text stays a string.
What about tabs?
Use spaces for indentation, as YAML does not allow tabs there.
Is my data sent anywhere?
No. The conversion runs entirely in your browser, so your YAML never leaves the tab.
Is it free?
Yes. Every tool here is free to use with no sign up.
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