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YAML to CSV Converter

Convert YAML data into a CSV table you can open in a spreadsheet. Free, instant, and no signup required.

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Input (YAML)
Output (CSV)

About YAML to CSV conversion

YAML is what most infrastructure-as-config tools use under the hood, from Kubernetes manifests to CI pipeline definitions — its comment support and multi-document format are things JSON simply lacks. CSV is what you get from a database export or a spreadsheet download — universally supported by analysis tools, but limited to flat, row-and-column data with no native nesting.

CSV is flat and tabular; YAML supports arbitrary nesting. Round-tripping through dot-notation column names (address.city) preserves structure in both directions, but a YAML file with deeply nested or irregular records won’t produce a clean, uniform CSV table.

How to convert YAML to CSV

  1. Paste your YAML into the left editor, or click sample above it to try example data.
  2. Click Convert. The CSV result appears on the right instantly.
  3. Click copy to copy the result, or download to save it as a file.

Example

Input (YAML):

name: Ada Lovelace
role: Mathematician
active: true
skills:
  - math
  - programming

Output (CSV):

name,role,active,skills
Ada Lovelace,Mathematician,true,math; programming

Frequently asked questions

Can a CSV file with dot-notation columns convert to nested YAML? Yes — if the CSV's headers use dot-notation (address.city) or bracket-index notation (tags[0]), the converter reconstructs the nested structure in YAML. Plain flat headers convert to a flat YAML list of records instead.
Do I need to create an account? No. There's no signup, login, or account required — paste your data and click Convert.
Is there a file size limit? There's no hard-coded limit, but very large inputs (multi-megabyte files) can slow down or briefly freeze the tab while converting. For big files, converting in smaller chunks works better.
Why did my conversion fail? Check the status line under the Convert button — it reports the exact line and column where the parser stopped, and the input editor highlights that line in red so you can jump straight to it.