Why convert TOML to YAML?

YAML is the standard format for Kubernetes, GitHub Actions, and Docker Compose, while TOML is common for Rust and Python project configs. Converting lets you migrate config files between these ecosystems.

Are TOML comments preserved in YAML output?

No. While YAML supports comments, the conversion process does not carry TOML comments through. You will need to add YAML comments manually after converting.

How are TOML dates handled in YAML?

TOML's native date, time, and datetime types are output as ISO 8601 strings in YAML (e.g. 2024-01-01T00:00:00Z), since YAML has no dedicated date type in most parsers.

How are TOML array-of-tables ([[table]]) represented in YAML?

Each [[table]] block becomes a list item under the corresponding key in YAML, using the standard YAML sequence (- key: value) notation.

Does this tool send my data to a server?

No. All conversion is performed entirely in the browser. Your data is never sent to any server.

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TOML to YAML Conversion

Convert TOML data to YAML format. Useful for K8s manifests, CI configs, and other scenarios requiring YAML. Enter text or upload a file (up to 100KB) and see real-time conversion results.

TOML Input

YAML Output

Read Only

How to use

About this tool

Converts TOML strings to YAML.

How to use

Paste TOML; the YAML output can be copied.

Use cases

• Converting TOML (e.g. Cargo.toml) to YAML for K8s/CI • Unifying config formats • Readability

Code Examples

TOML input example (before)

Read Only

1[package]
2name = "my-app"
3version = "1.0.0"
4
5[database]
6host = "localhost"
7port = 5432
8enabled = true
9

YAML output example (after)

Read Only

1package:
2  name: my-app
3  version: "1.0.0"
4database:
5  host: localhost
6  port: 5432
7  enabled: true
8

How it works

■ What is TOML? TOML (Tom's Obvious, Minimal Language) is a human-readable format for config files. It supports key=value, [sections], arrays, dates, numbers, and booleans. Widely used in Rust (Cargo.toml), Python (pyproject.toml). ■ What is YAML? YAML (YAML Ain't Markup Language) is a human-readable format that uses indentation for hierarchy. Widely used in Kubernetes manifests, CI/CD (e.g. GitHub Actions), Docker Compose. ■ How conversion works The tool parses TOML into an object and serializes it to indented YAML. All processing runs in the browser.

FAQ

Q: Why convert TOML to YAML?: A: YAML is the standard format for Kubernetes, GitHub Actions, and Docker Compose, while TOML is common for Rust and Python project configs. Converting lets you migrate config files between these ecosystems.
Q: Are TOML comments preserved in YAML output?: A: No. While YAML supports comments, the conversion process does not carry TOML comments through. You will need to add YAML comments manually after converting.
Q: How are TOML dates handled in YAML?: A: TOML's native date, time, and datetime types are output as ISO 8601 strings in YAML (e.g. 2024-01-01T00:00:00Z), since YAML has no dedicated date type in most parsers.
Q: How are TOML array-of-tables ([[table]]) represented in YAML?: A: Each [[table]] block becomes a list item under the corresponding key in YAML, using the standard YAML sequence (- key: value) notation.
Q: Does this tool send my data to a server?: A: No. All conversion is performed entirely in the browser. Your data is never sent to any server.