YAML to TOML Converter — Reorder Object Keys and Build Clean Manifests
Convert YAML configuration files to TOML format instantly. Paste any YAML config and get valid TOML output compatible with Rust (Cargo.toml), Go, and other TOML-native toolchains. 100% client-side and free.
How to Use YAML to TOML Converter — Reorder Object Keys and Build Clean Manifests
How to Use the YAML to TOML Converter
Step 1: Paste Your YAML
Paste any YAML configuration file into the input panel. Conversion happens instantly as you type.
Example input:
server:
host: localhost
port: 8080
debug: false
Output:
[server]
host = "localhost"
port = 8080
debug = false
Step 2: Toggle Datetime Detection
When enabled, ISO 8601 date strings (e.g. 2024-01-15T10:00:00Z) are emitted as native TOML datetime values instead of quoted strings. Disable this if you want all date-like values to remain as strings.
Step 3: Copy or Download
- Copy TOML — copies the output to your clipboard
- Download — saves an
output.tomlfile
How YAML Maps to TOML
| YAML | TOML |
|---|---|
Mapping (key: value) | Flat key-value or [table] section |
| Sequence of mappings | [[array of tables]] |
| Sequence of scalars | Inline array [a, b, c] |
Boolean true/false | true / false |
| Integer / float | Numeric literal |
| Null | "null" string with a comment |
| Date strings | TOML datetime (when detect is on) |
Tips
- The root value must be a YAML mapping — bare sequences or scalars at the root are not valid in TOML
- YAML anchors and aliases are resolved by the parser before conversion, so merged keys appear correctly in the TOML output
- The tool works entirely in your browser — safe for config files with secrets or API keys
Frequently Asked Questions
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