TOML to YAML/JSON Converter Guide
Convert TOML configuration to YAML or JSON — preserving types, arrays, and inline tables.
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Tags: TOML converter YAML JSON, TOML to JSON online, Rust config TOML converter
TOML to YAML/JSON Converter Guide TOML (Tom's Obvious Minimal Language) is a configuration format with explicit typing and unambiguous syntax. Converting TOML to YAML or JSON is straightforward because all three formats share the same underlying data model. --- Why TOML? TOML was designed to address the ambiguity problems in YAML and the verbosity of JSON for configuration files. Its design goals: One unambiguous way to express each value type Human-readable and human-writable Maps directly to a hash table / dictionary in every language TOML Type System TOML has explicit types that map cleanly to JSON and YAML: | TOML Type | Example | JSON Equivalent | YAML Equivalent | |-----------|---------|-----------------|-----------------| | String | | | | | Integer | | | | | Float | | | | | Boolean…
Frequently Asked Questions
What is TOML?
TOML (Tom's Obvious Minimal Language) is a configuration file format with explicit, unambiguous syntax and strong type support. It handles strings, integers, floats, booleans, dates, times, arrays, and tables. It is used by Rust (Cargo.toml), Python (pyproject.toml), Hugo, and Gitea.
How do I convert TOML to YAML?
Parse the TOML with a TOML library (tomllib in Python 3.11+, or the toml package), which gives you a Python dict, then serialize to YAML with PyYAML. The data round-trips cleanly since both formats support the same basic types.
What is the TOML specification?
The TOML specification is maintained at toml.io. Version 1.0.0 is the stable spec. It defines TOML tables (sections), inline tables, arrays of tables, key types, and datetime formats. The spec emphasizes unambiguity — every valid TOML file has exactly one interpretation.
What uses TOML for configuration?
Rust uses TOML for Cargo.toml (package metadata and dependencies), Python uses it for pyproject.toml (PEP 518/621), Hugo uses config.toml, and many Rust and Go applications use TOML for their configuration files.
How do I parse TOML in Python and Rust?
Python 3.11+ includes tomllib in the standard library for reading TOML. For writing TOML, use the tomli-w package. In Rust, add the toml crate and use serde for deserialization: `#[derive(Deserialize)] struct Config {...}` then `toml::from_str(content)?`.
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