TOML to YAML Converter

Temporal values and unsafe-range integers are preserved conservatively as YAML strings when type-safe JavaScript conversion would be ambiguous.

TOML

YAML

YAML indentation

—Keys

—Arrays

—Depth

0Conservative type notes

ReadyCommon TOML config subset: keys, tables, arrays, inline tables and arrays-of-tables. Multiline strings are rejected explicitly.

Before using the YAML

Parse first, then choose a target format whose data model matches the job. Conversion success does not prove that an application will accept the resulting config.

Format / validateConfirm the YAML parses before migration.

Inspect structureCheck mappings, arrays, paths and scalar types.

Choose target modelTOML has tables; Properties and ENV are fundamentally string-key/value formats.

ConvertUse explicit flattening/type rules rather than hidden guesses.

Verify in contextReview application-specific schema and semantics before replacing production config.

Format Validate Tree Find path YAML → JSON JSON → YAML YAML → XML XML → YAML YAML → TOML YAML → Properties Properties → YAML YAML → ENV

conversions run in the browser. The new TOML path targets common configuration syntax rather than claiming a complete TOML conformance suite; Properties nesting is an explicit WebToolArc convention, not part of Java Properties itself.

TOML → YAML loss & round-trip review

Convert with the existing parser, then inspect the parts that commonly become ambiguous in migration: comments, temporal literals, conservative numeric fallbacks and the resulting structural path inventory. A parsed YAML round-trip check verifies the emitted structure.

YAML indentationDownload filename

—Source comments

—Temporal literals

—Parser warnings

—Structural round-trip

Generated YAML

Ready.

TOML comments are not part of the parsed data model and therefore cannot be position-preserved by this converter. Temporal TOML values are intentionally emitted conservatively to avoid silent timezone/type mutation.

Explicit config-conversion scope

The parser covers common configuration constructs including tables, arrays, inline tables and arrays-of-tables. Multiline strings and less common TOML syntax are rejected explicitly.

Browser-local processing

Parse common TOML configuration into YAML with tables and arrays-of-tables mapped to nested mappings and sequences. Always verify the target application’s own schema and type expectations after conversion.