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TOML to YAML Converter

TOML tables into clean YAML, with the strings YAML would misread quoted for you.

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Drop a TOML file here, or click to choose one

Converted on your device — the file is never uploaded

YAML

Quick Tool Overview

The TOML to YAML Converter turns Cargo, Hugo and pyproject configuration into YAML, quoting the strings YAML would otherwise read as booleans or dates so no value changes meaning.

What it does
Converts TOML to YAML
You give it
A TOML file
You get back
Equivalent YAML, safely quoted
Best for
CI pipelines, manifests and Helm values
Converters Free, unlimited use No sign-up Runs in your browser

About the TOML to YAML Converter

You have a Cargo.toml, a pyproject.toml or a Hugo config and you need the same settings as YAML — for a CI pipeline, a Kubernetes manifest, a Helm values file or a tool that only reads YAML. The structures map cleanly, but YAML’s habit of reading bare words as booleans and dates makes a careless conversion dangerous.

Paste TOML and get YAML. [tables] become nested mappings, [[arrays of tables]] become lists of mappings, and inline tables and arrays are expanded. Strings that YAML would otherwise read as something else — yes, no, on, off, null, 1.0, a bare date — are quoted automatically, so no value changes meaning on the way across. Choose the indent and whether every string is quoted, and check the key count to confirm nothing was lost.

Key features of the TOML to YAML Converter

Tables become mappings

[tables] and dotted names nest exactly as they should.

Array tables become lists

[[entries]] become a YAML list of mappings.

No accidental booleans

yes, no, on, off, 1.0 and bare dates are quoted so they stay strings.

Inline tables expanded

{ a = 1, b = 2 } becomes a normal nested mapping.

Key count shown

Compare the counts to confirm nothing was lost in the conversion.

How to use the TOML to YAML Converter

  1. 1

    Paste or drop the TOML

    Cargo.toml, pyproject.toml, config.toml or any TOML file.

  2. 2

    Pick the indent

    Two spaces is the usual YAML house style; four suits some linters.

  3. 3

    Choose the quoting

    Quote only where YAML needs it, or quote every string for safety.

  4. 4

    Copy or download the YAML

    Paste it into your pipeline, manifest or values file.

Frequently asked questions

Because YAML reads yes, no, on, off, null, 1.0 and dates as non-strings. Quoting them keeps them as the text TOML held, which is the whole point of a faithful conversion.

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