About this tool
YAML Formatter — Format, validate and convert YAML to and from JSON. Free, fast and private. Runs entirely in your browser at Quick Calci Tools.
Examples
Common scenarios for the YAML Formatter.
Compact YAML → indented
- yaml
- name: app ports: [80,443] env: prod
Indented YAML with the array expanded across lines.
YAML → JSON
- yaml
- name: app port: 80
{"name":"app","port":80}
Who uses the YAML Formatter?
Common scenarios and audiences for this tool.
Platform engineers
Tidy Helm and Kustomize bases before review.
DevOps
Convert CloudFormation-style snippets for tooling that ingests JSON.
Technical writers
Keep tutorial YAML readable with consistent two-space indents.
Students
Contrast YAML vs JSON for config lessons.
Freelance automators
Ship GitHub Actions workflows clients can diff easily.
Frequently asked questions
Everything you need to know about the YAML Formatter.