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CSV to YAML Converter
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Configuration and fixture data often starts life in a spreadsheet — someone maintains a list of environments, feature flags, or seed records in columns — and then needs to become YAML for a config file, a Helm values file, or a test fixture. Retyping that by hand is slow and introduces exactly the indentation mistakes YAML punishes. This converter turns each CSV row into an item in a YAML sequence, using the header row for keys, with correct indentation and quoting applied automatically where a value would otherwise be misread. Quoted fields containing commas or line breaks survive intact, and you can pick the delimiter if your export is semicolon or tab separated. Paste, convert, copy. Everything happens in your browser, so exports containing internal or customer data stay on your machine.
Features
- Turns each CSV row into a YAML sequence item
- Uses the header row for keys
- Applies correct indentation automatically
- Quotes values that would otherwise be misread by YAML
- Handles quoted fields containing commas and newlines
- Supports comma, semicolon, and tab delimiters
- Output is ready to paste into a config or fixture file
- Runs fully client-side — nothing is uploaded
Why use this csv to yaml converter?
- Avoids the indentation errors of hand-written YAML
- Turns a maintained spreadsheet into deployable config
- Keeps internal data off third-party servers
- Instant conversion regardless of row count
- Free with unlimited use
Frequently asked questions
What does the YAML output look like?
A sequence of mappings: one list item per CSV row, with the header row supplying the keys. That is the shape most config files and fixtures expect.
Are values quoted in the output?
Values are quoted where leaving them bare would change their meaning — for example text that YAML would otherwise read as a boolean, a number, or a null.
Are numeric columns converted to numbers?
Yes, but only when it is safe. A value becomes a number just when converting it back produces the identical text, so 36 and 3.14 are emitted unquoted while identifiers like 01234 and trailing-zero decimals like 1.50 stay quoted strings. Values reading true or false become booleans.
Can I use a different delimiter?
Yes. Comma, semicolon, and tab are all supported, which covers most spreadsheet exports including European locale files.
What if a field contains a colon?
It is quoted in the output, because a bare colon followed by a space would otherwise be read by YAML as a key separator.
Is my spreadsheet uploaded?
No. The conversion runs entirely in your browser and nothing is transmitted or stored.