TOML to JSON Converter

The TOML JSON Converter is a free browser-based utility for converting between TOML and JSON, two widely used data serialization formats in modern software development. TOML is the standard configuration format for Rust's Cargo.toml, Python's pyproject.toml, Hugo, Netlify, and many other tools and frameworks. JSON, on the other hand, is ubiquitous in API responses, package.json, tsconfig.json, and countless other contexts.

Converting between these two formats is a common task during project migration, configuration comparison, and data exchange between different tools. This converter supports core TOML syntax including key-value pairs, tables (sections), arrays, inline tables, quoted strings, numbers, booleans, and comments with accurate parsing.

All processing happens entirely within your browser, so sensitive configuration data, API keys, and internal settings are never sent to any external server. The built-in TOML parser requires no external dependencies, ensuring lightweight and fast operation. The tool automatically detects input changes and updates conversion results in real-time, allowing you to instantly verify format differences and compatibility.