TOML to JSON Converter
Parse TOML config files into structured JSON for APIs and tooling.
- 100% client-side · your data never leaves your browser
- Instant, no rate limits
- Free, no sign-up
Your result appears here
Paste your data into the panel on the left — everything runs privately in your browser.
Overview
TOML to JSON Converter — Parse TOML Config Online
Convert TOML configuration files to JSON for APIs, JavaScript tooling, and JSON-native pipelines. Paste pyproject.toml snippets, Cargo.toml sections, or any TOML document and get structured JSON instantly. Parsing runs in your browser — configs stay on your machine.
TOML in modern stacks
Python (pyproject.toml), Rust (Cargo.toml), and many CLI tools use TOML for human-edited config. JSON remains the default for web APIs and browser tooling. This converter bridges both worlds when you need to inspect TOML as nested JSON or feed it to JSON-only tools.
How TOML maps to JSON
Tables ([section]) become JSON objects, and dotted keys build nested objects. Arrays of tables ([[items]]) become arrays of objects. Inline tables map to objects, and TOML's typed scalars — strings, integers, floats, booleans, and dates — become their JSON equivalents (dates as ISO-8601 strings, since JSON has no date type).
- [table] and dotted keys → nested objects
- [[array of tables]] → array of objects
- Integers, floats, booleans → JSON numbers and booleans
- Dates and times → ISO-8601 strings
TOML in modern stacks
TOML is the config format of choice for Python packaging (pyproject.toml), Rust (Cargo.toml), and many CLI tools because it's easy to hand-edit. Converting it to JSON lets you feed those configs into JavaScript tooling, JSON-only APIs, tree viewers, or a JSON Schema validator without writing a parser.
FAQ
Frequently asked questions
How do I convert TOML to JSON?
Paste your TOML — a pyproject.toml or Cargo.toml section works — and JsonDrift returns the equivalent structured JSON to copy or download.
How are TOML dates handled?
JSON has no date type, so TOML dates and times are converted to ISO-8601 strings that preserve the original value.
Are comments preserved?
No. JSON has no comment syntax, so TOML comments are dropped. The data is fully preserved.
Can I convert invalid TOML?
Parse errors surface with a message pointing at the problem so you can fix the source TOML.
Continue with a related tool
All tools- JSON to TOML Converter
Convert JSON objects to TOML for pyproject.toml, Cargo, and config files.
- CSV to JSON Converter
Turn CSV and spreadsheet data into structured JSON arrays.
- JSON to CSV Converter
Convert JSON arrays and nested objects into clean, flattened CSV ready for spreadsheets.
- JSON to JSONL Converter
Convert a JSON array into newline-delimited JSON (JSONL / NDJSON) for logs and ML pipelines.
- JSON to XML Converter
Transform JSON objects into XML documents with a custom root element.
- JSON to YAML Converter
Convert JSON to YAML for configs, Kubernetes, and CI pipelines.