TOML to YAML Converter Online — Free & Private

Turn TOML into YAML using the same JSON intermediate as other FastMinify converters — indentation controls included.

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TOML → YAML converter
Turn TOML configs into readable YAML for reviews and GitOps diffs.

Developer notes

• YAML comments must be added manually after conversion. • Use readable layout for human review; tight layout for compact diffs.

When teams pick this route

• Share TOML configs with teammates who prefer YAML. • Preview YAML equivalents before migration projects.

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 is auto-detected from the first line (comma, semicolon, tab, or pipe) — toggle whether row 1 holds column names. 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

Package section

Sample input

# FastMinify library manifest [package] name = "fastminify" version = "2.1.0" edition = "2021" authors = ["FastMinify Team"] [dependencies] serde = { version = "1.0", features = ["derive"] } tokio = "1.35" [features] default = ["cli"] cli = []

Sample output

package: name: fastminify version: 2.1.0 edition: 2021 authors: - FastMinify Team dependencies: serde: version: 1.0 features: - derive tokio: 1.35 features: default: - cli cli: []

Dependencies

Sample input

[project] name = "fastminify-cli" version = "2.1.0" requires-python = ">=3.11" [project.dependencies] click = ">=8.1" rich = ">=13.0"

Sample output

project: name: fastminify-cli version: 2.1.0 requires-python: >=3.11 dependencies: click: >=8.1 rich: >=13.0

Navigate related tools

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

TOML → YAML FAQ

Emitter options

String quoting in YAML?

Controlled via YAML string quoting options on the conversion panel.

Round-trip fidelity?

Comments and stylistic choices may differ — diff manually for critical configs.

Privacy?

All conversion runs locally in your browser.

TOML

Convert TOML to JSON, YAML, XML, CSV, Properties and INI.

Other converter families

JSON

Convert JSON to YAML, XML, CSV, TOML, TSV, SQL, HTML, Properties and INI — all in your browser.

YAML

Convert YAML to JSON, XML, CSV, TOML, TSV, Properties and INI — cross-target TOML via Properties → TOML and INI → TOML in alsoLinks.

XML

Convert XML to YAML, CSV, JSON, TOML, TSV and HTML.

CSV

Convert CSV to JSON, XML, YAML, TOML and TSV.

TSV

Convert tab-separated values to JSON and CSV.

SQL

Parse INSERT statements to JSON and CSV.

HTML

Convert HTML to JSON, XML, YAML and Markdown.

Markdown

Convert Markdown to HTML locally.

Properties

Convert Java .properties files to JSON, YAML, INI and TOML.

INI

Convert INI configs to JSON, YAML, Properties (flat INI only) and TOML.

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Expand minified or compressed code — unminify JavaScript, CSS, TypeScript, SCSS, LESS, SQL, YAML and other formats when debugging or reviewing.

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GitHub Actions and GitLab CI — format YAML and check workflow/job structure in your browser.

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Multi-doc manifests, structural validate, Ingress/Deployment starters, and Helm values formatting.

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Count words, build Markdown TOCs, and clean line lists — all in your browser.

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Token counting, pricing estimates, and context-window fit — 100% browser-local.

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