YAML to TOML

Converts YAML into TOML format, for configuration migrations.

Parse and convert YAML to TOML.

Steps and notes

What is YAML to TOML?

Convert YAML configuration into TOML. Typical situation: a tool or language ecosystem expects TOML (Cargo, pyproject.toml, Netlify) while your notes or templates are in YAML — paste one side, copy the other, with nested structures mapped to TOML tables.

  1. Paste the YAML
  2. Get the TOML result
  3. Copy and use it

Frequently asked questions

How do nested YAML maps become TOML?
Nested mappings become TOML table headers ([section], [section.sub]). The output stays readable, but very deep nesting produces long dotted table names — that is the format's nature, not a bug.
What about YAML lists and mixed types?
Lists map to TOML arrays; lists of maps become arrays of inline tables ([{...}]). Homogeneous lists survive perfectly; exotic mixes may change shape slightly.
Are YAML anchors and multi-line strings converted?
Anchors are resolved to their values during parsing — the TOML output is always anchor-free. Block scalars become ordinary strings with the newlines preserved.

Read the full step-by-step guide for this tool

Category: Converter

YAML & TOML workflow

YAML Formatter & Validator — Format YAML Online → YAML to JSON converter → JSON to YAML converter → YAML to TOML → TOML to YAML