Excel to YAML Converter

About Excel to YAML Converter

This Excel to YAML converter turns your .xlsx or .xls spreadsheets into clean YAML arrays and objects. It is ideal for configuration files, API payloads, infrastructure-as-code templates, and any workflow that prefers human-readable YAML over binary spreadsheets.

Key Features

• Spreadsheet support: Upload Excel files exported from Microsoft Excel, Google Sheets, or LibreOffice.
• Array of objects: Each row becomes a YAML list item with key–value pairs.
• Header-aware conversion: Use the first row as field names, or treat every row as a simple array.
• Instant YAML output: As soon as your file is processed, the YAML is generated automatically.
• Copy & download: Copy the YAML to your clipboard or download it as a .yaml file.

How to Use the Excel to YAML Converter

1. Upload your Excel file: Drag and drop a .xlsx or .xls file, or click to browse from your computer.
2. Set header option: Enable "First row is header" if the first row contains column names (recommended).
3. Wait for processing: The tool reads the first sheet and converts it into YAML automatically.
4. Review YAML: Scroll through the generated YAML and verify the keys and indentation.
5. Export: Copy the YAML into your project or download it for later use.

Examples

Example 1: Configuration records

If your Excel sheet has:

• Columns: environment, url, timeout
• Rows: prod, https://api.example.com, 30

The YAML output will look like:

-
  environment: prod
  url: https://api.example.com
  timeout: 30

Example 2: Simple list without headers

If you disable "First row is header" and your sheet contains a single column of values, the tool will produce a YAML list such as:

-
  - Task 1
  - Task 2
  - Task 3

When to Use Excel to YAML

• Application configuration: Convert environment settings maintained in Excel into YAML config files.
• API payloads: Prepare example requests and responses for REST or GraphQL APIs.
• DevOps & IaC: Generate YAML for tools like Kubernetes, Ansible, or CI/CD pipelines from spreadsheets.
• Content management: Turn editorial spreadsheets into YAML front matter for static site generators.

Benefits

• Readable output: YAML is easy for humans to scan, edit, and review in code reviews.
• Faster workflows: Skip manual re-typing of data from Excel into YAML files.
• Less error-prone: Consistent indentation and key naming reduce syntax errors.
• Works in the browser: No need to install Excel add-ins or command-line tools.

FAQ

How are numbers and text handled?

Values are exported as plain text in YAML. If you need strict typing (for example, integers vs strings), you can adjust them manually after export or apply a schema in your application.

Can I convert multiple sheets at once?

This tool reads the first worksheet in your Excel file. To convert multiple sheets, export each sheet as a separate file or re-upload the workbook after rearranging sheets.

What about special characters?

Special characters are preserved in the YAML output. When necessary, you can wrap values in quotes in your YAML consumer or adjust them manually.

Is my Excel data uploaded anywhere?

No. All Excel to YAML conversion runs entirely in your browser. Your spreadsheets are never sent to a remote server, which keeps sensitive configuration and business data safe.

Privacy & Security

Everything happens locally on your device using client-side JavaScript. Files are not stored, logged, or transferred, making this Excel to YAML converter suitable for private and corporate data.