File ConversionData Format ConversionFree Tool

YAML to JSON

Convert YAML to JSON using a hand-written indentation-based parser supporting basic key-value pairs and nesting — not the full YAML spec (no lists, anchors, or multi-line strings).

How to Use YAML to JSON
  1. 1Paste your YAML data (basic key:value structure)
  2. 2The JSON output is generated automatically
  3. 3Copy the result
Frequently Asked Questions

No — it's a hand-written parser covering basic key: value pairs and indentation-based nesting, with automatic type detection for true/false/null and numbers. It does NOT support YAML lists (- item), anchors/aliases (&ref/*ref), multi-line block strings (| or >), or flow-style {a: b} / [a, b] syntax.

Simple, flat-to-moderately-nested configuration-style YAML (like the output of our own JSON-to-YAML tool) — complex YAML using the unsupported features above won't parse correctly.

"true"/"false" become booleans, "null" becomes null, and numeric-looking values become numbers — everything else stays a string.

No — parsing happens entirely in your browser.

Related Tools

Related Articles

More from File Conversion