Updated: 2026-07-11
βοΈ Input Properties
π JSON Output
π How to Use
The Properties to JSON converter transforms Java Properties key=value text into JSON objects with dot-notation nesting.
How to use
- Paste Properties text in the input box
- Click "Convert"
- Dot-separated keys are auto-expanded to nested objects
- Click "Copy" to get the JSON text
Conversion Rules
- Nested keys β server.port=8080 becomes {"server":{"port":8080}}
- Comments β Lines starting with # or ! are ignored
- Type inference β Auto-detect numbers, booleans, and null
β FAQ
Is the Properties to JSON converter free?
Yes, completely free to use with no registration required.
How are dot-separated keys handled?
Dot-separated keys are auto-expanded to nested JSON objects. For example, server.port=8080 becomes {"server":{"port":8080}}.
Does my data get uploaded to a server?
No. All conversion happens in your browser.
Are comment lines supported?
Yes. Lines starting with # or ! are automatically ignored.
How are value types detected?
The tool auto-infers types: true/false become booleans, numbers become numbers, null becomes null, others stay strings.