Properties to JSON

Convert Java .properties files to nested JSON. Supports custom separators and array formats.

Input Properties

application.name=My App
application.version=1.0.0
# User roles
user.roles.0=admin
user.roles.1=editor

Output JSON

Options

Properties Format

Key-Value Separator

Object Separator

Array Indexing Style

Dot notation (arr.0)

Bracket notation (arr[0])

Output Indentation

Spaces

Tabs

None (Minified)

About Properties to JSON Converter

Use this tool to turn INI/Java-style properties files into nested JSON objects. A properties file is a simple key-value text format commonly used for configuration in Java applications. This converter intelligently handles nested keys and array indexing.

Features

Client-Side Conversion: Your data is processed securely in your browser and is never uploaded to a server.
Custom Formats: Configure custom key-value and object separators to handle a variety of file formats.
Array Support: Automatically create arrays from numeric keys (e.g., users.0=Alice) or bracketed indices (users[0]=Alice).
Flexible Output: Format the output JSON with tabs, spaces, or keep it minified.
Data Type Parsing: Automatically converts values to numbers or booleans where appropriate.

How to Use

Paste your properties text into the input panel or import a .properties or .txt file.
Adjust the format options to match your file's structure, such as changing separators or enabling bracketed array indexing.
Click "Convert" to see the live JSON output.
Download the result or copy it to your clipboard.