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YAML Converters

YAML Converter

Convert YAML to JSON or JSON to YAML, both ways.

  • Free
  • No sign-up
  • Runs in your browser

Converts YAML to JSON, or JSON back to YAML — pick the direction below. Anchors/aliases are expanded and multi-document files (---) become a list.

Output

Converted output will appear here.

What does YAML Converter do?

YAML Converter reads YAML, checks that it is valid and converts it to another format — pick the output you need in the sidebar.

What you can use

YAML indented with spaces (YAML does not allow tabs). Lists start with “- ” and pairs are written “key: value”.

How to use YAML Converter

  1. Step 1

    Paste your YAML into the input box, or use “Load example” to see the expected shape.

  2. Step 2

    Press Convert. If the input isn’t valid, an error message tells you what is wrong and where.

  3. Step 3

    Copy the converted output or download it as a file.

Good to know

  • Indentation is the structure in YAML: a single tab or one space out of line changes the meaning. If something looks wrong, check the indentation first.
  • Big inputs (several MB) work, but the browser may pause for a moment while it converts.

Your privacy

Everything happens in this browser tab: what you paste is converted by JavaScript on your device and never sent to our server. Closing the tab clears it. Even so, don’t paste live passwords, API keys or customer records into any website.

Related tools

All YAML Converters
YAML to JSONTurn YAML into structured JSON.YAML to XMLTurn YAML into well-formed XML.YAML to CSVTurn YAML into a CSV file for Excel or Google Sheets.YAML to TSVTurn YAML into tab-separated rows that paste into a spreadsheet.YAML to TextTurn YAML into plain, readable text.YAML to HTMLTurn YAML into an HTML table.

Frequently asked questions

Is YAML Converter free?

Yes. YAML Converter is completely free, with no sign-up, no watermark and no daily limit.

Is the data I paste sent to a server?

No. Conversion runs in JavaScript inside this browser tab and nothing you paste is sent or stored. Even so, avoid pasting live passwords, API keys or private customer data into any website.

Why do I get an error?

Almost always the input isn’t quite valid: a missing comma or quote in JSON, an unclosed tag in XML, or a tab in YAML. The error message shows where parsing stopped — fix that spot, or press “Load example” to compare with input that works.

Does it work on my phone?

Yes. It works in any modern browser on Android, iPhone, tablets and computers — nothing to install.