Data Converters

YAML to CSV Converter

Convert a YAML sequence of mappings into a flat CSV file. Each YAML mapping becomes a CSV row, and the union of all keys becomes the header row, ready for spreadsheets.

Runs entirely in your browser No account needed Copy or download result
YAML CSV
Paste YAML below, or drop a file

Converted entirely in your browser; your data never leaves your device

Features

  • YAML sequences of mappings → CSV rows
  • Union of all keys becomes the header row
  • Missing keys produce empty cells
  • Download as .csv file
  • Browser-only. No upload

How to use it

  1. Paste your YAML (a list/sequence of mappings) into the input.
  2. Click Convert.
  3. CSV output appears with header row from YAML keys.
  4. Copy or download the .csv file.

Use cases

  • Exporting YAML config data to spreadsheets
  • Converting YAML test fixtures to CSV for review
  • Flattening structured YAML for data analysis

Limitations

  • Nested objects are serialised as JSON strings. The tool flattens only one level deep.
  • YAML anchors and aliases are resolved before conversion.
See also

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Questions & answers

Frequently asked

What YAML structure does it require?

A top-level sequence (list) of mappings. E.g. - name: Alice age: 30