Properties ↔ JSON Converter
Convert Java .properties files to JSON and back, with nested keys.
Java .properties
JSON
About the Properties ↔ JSON Converter
Parse Java .properties files into JSON with optional nested key expansion (dotted keys become objects) and type inference for numbers and booleans. Or flatten JSON back into a .properties file with proper value escaping. Continuation lines, comments and standard escapes are supported.
Examples
Nested config
app.name=Coders Hub
server.port=8080Output
{"app":{"name":"Coders Hub"},"server":{"port":8080}}Keyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
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Frequently asked questions
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Version 1.0.0 · Updated 2026-08-25 · Runs entirely in your browser