YAML → TOML — DevOps configs to TOML

Convert readable YAML into TOML through a JSON intermediate — ideal when standardising on Cargo.toml or pyproject.toml.

Loading…
YAML → TOML converter
Convert DevOps YAML into TOML through a JSON intermediate.

Developer notes

• Multi-document YAML streams are rejected. • YAML comments are lost after JSON intermediate. • Align with team TOML style guides after conversion.

When teams pick this route

• Standardise on TOML when upstream still ships YAML. • Preview TOML equivalents of Compose or Helm values.

About these options

CSV exports: choose a delimiter (Auto follows locale — semicolon on /fr), RFC-minimal vs always-quoted fields, line endings, and whether to emit a header row. CSV imports: delimiter + whether row 1 holds column names (Auto delimiter follows locale only for convenience). JSON output (XML, YAML, or CSV sources): indentation (including compact one-line) and optional recursive key sort. JSON → XML: toggle pretty-printing and indent width. YAML output: indent width, readable vs tighter layout, and deterministic string quoting (there is no source YAML file to “preserve”). XML comments are not represented in the intermediate JSON tree.

Worked example

Simple mapping

Sample input

package: name: fastminify version: "1.0.0"

Sample output

[package] name = "fastminify" version = "1.0.0"

Dependencies

Sample input

dependencies: serde: "1.0"

Sample output

[dependencies] serde = "1.0"

Navigate related tools

See YAML → JSON, JSON → TOML, or format TOML with TOML beautifier.

YAML → TOML FAQ

Intermediate JSON step

Anchors and aliases?

Resolved during YAML parse — output reflects expanded structure.

Dates in YAML?

Non-JSON-safe YAML types may error — reshape upstream first.

Privacy?

All parsing stays in your browser.

Looking for converters, encoders, formatters, and minifiers in one place? Developer tools hub Open the curated developer tools catalogue.