CSV to YAML Converter

Our free online CSV to YAML converter turns flat spreadsheet rows into a structured YAML list of records (or collapses a flat YAML list back into CSV) with a single click. It's a fast way to move tabular data — exported from Excel, Google Sheets, or a database — into configuration files, fixtures, or automation scripts that expect YAML.

Why Convert CSV to YAML?

CSV is the universal export format for spreadsheets and databases, but it's strictly flat — every value is a string, and there's no way to represent nested structure. YAML, by contrast, is a natural fit for configuration: Ansible inventories, Kubernetes fixtures, static-site generator data files (Jekyll, Hugo, Eleventy), and test fixtures all commonly store lists of records as YAML. Converting a CSV export straight into that format saves you from hand-transcribing every row.

How the Conversion Process Works

1. Select Conversion Mode: Choose CSV to YAML or YAML to CSV, and set the delimiter your CSV uses (comma, semicolon, or tab).
2. Paste Your Data: Drop your CSV export or YAML list into the input box on the left.
3. Automatic Mapping: The first CSV row is treated as the header. Each subsequent row becomes a YAML mapping keyed by those headers. Quoted fields containing commas, quotes, or newlines are parsed correctly.
4. Export: Copy the result or download it as a .yaml or .csv file.

Common Use Cases

• Static Site Data Files: Convert a spreadsheet of team members, products, or FAQ entries into a YAML data file for Jekyll, Hugo, or Eleventy.
• Test Fixtures: Turn a QA-provided spreadsheet of test cases into YAML fixtures for your test suite.
• Ansible & DevOps: Convert a CSV of hosts or variables into a YAML inventory or vars file.
• Reverse Export: Flatten a YAML list of records back into CSV so it can be opened in Excel or Google Sheets for review.