Data converters
YAML Formatter
Validate and consistently indent YAML data. Nothing you enter leaves your browser.
Your result will appear here.
What this tool does
About the YAML Formatter
Validate and consistently indent YAML data. It is useful when data needs to move between spreadsheets, APIs, configuration files, databases, or documentation without retyping records.
Formatting changes whitespace and layout for readability; it does not intentionally change the underlying values.
How to use it
- Paste YAML in the input pane. Use the example button if you want to see the expected syntax.
- Review the input for the structure shown in the example. Then select “Format YAML.”
- Inspect the result for warnings or structural differences, then copy it into the destination system.
Practical example
Start with a known input
Try this sample input: app: FormatCalc features: - private - fast Select “Format YAML” and compare the result with the source before using it elsewhere.
What to know about the result
- YAML uses indentation to express structure, so spacing is meaningful and tabs should not be used for indentation.
- Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.
Common questions
Using the YAML Formatter
Is the YAML Formatter free to use?
Yes. FormatCalc's YAML Formatter is free to use with no account required.
Is my data private when I use the YAML Formatter?
Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.
How do I use the YAML Formatter?
Paste or type your input, select any available options, and choose Format YAML. You can then copy the result.
What should I check before using the result?
YAML uses indentation to express structure, so spacing is meaningful and tabs should not be used for indentation. Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.