Transform YAML into CSV

Convert YAML to CSV with ease using the Transform YAML into CSV tool. Automatically flatten nested data and export clean CSV output instantly.

Paste your input above or import a file below.
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Supported file types: .yaml, .yml, .txt, .json, .xml, .ini, .md
Total lines: 0
Options
Flatten nested keys
Maximize output

How to Use:

  • Paste your YAML into the Input YAML box or import a file using the Choose File button.
  • Toggle Flatten nested keys to convert nested objects into dot-separated keys (like user.name).
  • Toggle Maximize output to expand the output area for large CSV files.
  • Click Convert to transform the YAML into CSV format.
  • Use Copy Output to copy the generated CSV.
  • Click Export to File to save the CSV as a .csv file.
  • Use Clear All to reset the input, output, file name, and toggle states.

What Transform YAML into CSV can do:

This tool reads a list of objects from your YAML and converts it into a properly formatted CSV table. It works with arrays of objects (like user lists) and can flatten nested keys so you get simple, one-row-per-record output. The output updates live as you type or import a file. If your YAML isn’t formatted as an array, the tool will warn you. It also includes copy/export features, character count, and visual feedback to help you cleanly export tabular data from structured YAML input.

Example:

Input YAML:
users:
  - name: Alice
    age: 30
  - name: Bob
    age: 28

Output CSV:
name,age
"Alice",30
"Bob",28

Common Use Cases:

Perfect for developers, data teams, and DevOps engineers exporting config data, test cases, or user records from YAML into spreadsheets, tools like Excel, or database import pipelines.

Useful Tools & Suggestions:

If you’re flattening YAML into CSV, you might want to Trim CSV Columns afterward to clean up any weird whitespace that came through. And if you’re curious about the shape of the result, Find CSV Dimensions gives you a quick look at how wide and deep the file actually is.

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