YAML to JSON

YAML 1.2

Convert YAML configuration files to JSON online. Fast client-side yaml to json converter supporting anchors, aliases, and custom spacing.

Runs 100% in your browser - zero server calls
Updated 2026-06-29
JSON Output
How to convert YAML to JSON online
This tool operates as a versatile yaml to json and yaml json converter online. Paste your YAML content into the input editor and click Convert. The tool parses the YAML (resolving any anchors and aliases) and produces a formatted JSON string. Use the Indent selector to choose between 2-space, 4-space, or tab indentation for the JSON output.
Common use cases for YAML to JSON conversion with YAML JSON CONVERTER ONLINE
Many developer tools and APIs accept JSON but not YAML. You might need to convert a Kubernetes manifest for use in a JSON-only API, transform a GitHub Actions workflow file for analysis, or extract values from a package configuration. This tool handles all of these formats without any server involvement.
YAML gotchas that affect JSON conversion
YAML's flexibility can cause surprises. Unquoted values like yes, no, on, and off are parsed as booleans in YAML 1.1. Bare numbers without quotes become JSON numbers. Indentation is significant  -  a single incorrect space breaks parsing. If conversion fails, check for tab characters (YAML requires spaces) and verify your indentation is consistent.
Frequently Asked Questions
How does this yaml to json converter handle multiple documents?
Our yaml to json converter parses multi-document YAML strings and reformats them as an array of JSON objects.
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