TOML ↔ JSON/YAML Converter

Convert between TOML, JSON, and YAML formats. Perfect for Cargo.toml, pyproject.toml, and configuration files.

Indent:

TOML Input

About TOML ↔ JSON/YAML Conversion

TOML (Tom's Obvious Minimal Language) — simple config format used by Cargo (Rust), pyproject.toml (Python), Hugo, and many CLI tools.
JSON — strict key-value format for APIs, data exchange, and tooling configs like package.json and tsconfig.json.
YAML — indentation-based format popular for Kubernetes, Docker Compose, and CI/CD pipelines.
TOML requires a table (object) at the root — arrays and primitives are not valid top-level values.
Everything runs in your browser — no data is sent over the network.