YAML to Excel / CSV

Turn a YAML list of records into a CSV file ready to open in Excel, Google Sheets, or Numbers

Input

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Output

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What is YAML to Excel / CSV

Last reviewed: April 18, 2026

YAML is a human-friendly data serialization format that relies on indentation instead of braces, commonly used for configuration in Kubernetes, CI/CD, and modern tooling.

YAML to Excel parses a YAML document that is a list of objects, collects the union of all field names as headers, and emits a CSV file with proper quoting of commas, quotes, and newlines.

It's ideal for moving YAML fixtures, config lists, or API responses into a spreadsheet for analysis.

Why use it

Convert YAML fixtures into Excel / Google Sheets.
Audit a YAML list of records quickly.
Produce CSV bundles for non-developer stakeholders.
Feed YAML data into analytics pipelines.
Bridge configuration files with spreadsheets.

Features

Union-of-keys header row
Quote-escapes commas, quotes, newlines
Nested objects flattened as JSON strings
YAML to Excel / CSV never leaves your machine
Outputs Excel / Sheets compatible CSV

How to use YAML to Excel / CSV

Paste YAML list. Drop a YAML sequence of mappings.
Click Run. The tool produces a CSV with all columns populated.
Save as .csv. Open in Excel, Google Sheets, or Numbers.

Example (before/after)

YAML

- id: 1
  name: Ada
  role: admin
- id: 2
  name: Bob

CSV

id,name,role
1,Ada,admin
2,Bob,

Common errors

Root must be a list

The tool expects a top-level YAML sequence of mappings.

Fix: Wrap a single object in a list or restructure the input.

Nested objects

Nested fields get flattened as JSON strings in cells.

Fix: Pre-flatten complex fields if you want them in separate columns.

FAQ

Can I open the output in Excel directly?

Yes — save the output as .csv and open in Excel, Google Sheets, or Numbers.

How are nested objects handled?

They are serialised as JSON strings inside the cell.

Does it support multi-document YAML?

No — provide a single YAML list.

What delimiter is used?

Comma (,) — standard CSV format.

Is input uploaded?

No — conversion is client-side only.

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