Convert a CSV table into YAML records
CSV stores data in a grid, while YAML represents the same information in a more readable text structure. This converter uses the first CSV row as field names and turns each following row into one item in a YAML list. The result works well as a starting point for configuration files, example data, and simple data exchange when a list of flat records is what your application expects.
How the conversion works
Each heading becomes a key and the value in the same column becomes that key's value. Every data row becomes a separate list item. Values are kept as text and quoted so strings such as true, 0012, null, colons, or punctuation are not accidentally read as YAML booleans, numbers, or syntax. Empty CSV cells are written as empty strings. Repeated headings are given a numeric suffix to keep every generated key distinct.
Choose the CSV separator
Comma is common in CSV files, but exports may use semicolons, tabs, or pipes between columns. Select the separator that matches your input. Quoted CSV cells can contain commas, line breaks, or doubled quotation marks; the converter reads those as part of the cell instead of splitting them into extra columns.
Steps to create YAML from CSV
- Drop a CSV file into the upload area or paste CSV text.
- Check that the first row contains a heading for every column, then choose the separator.
- Select Convert to YAML and review the complete table preview and generated YAML.
- Copy the YAML or download it as a
.yamlfile.
The converter creates a flat list of objects. It does not infer data types, build nested structures, or validate the result against a YAML schema. The preview and output include every parsed data row. Your file is read and converted locally in your browser; it is not uploaded to RomitCSV.
Frequently asked questions
What does the first CSV row become?
The first row supplies the YAML keys. Each later row becomes one list item, with values matched to their column headings.
Are numbers and true or false values converted to native YAML types?
No. Values are preserved as strings and quoted in the YAML output, so text like 0012, true, and null keeps its original meaning as text.
What happens when a heading is repeated?
Repeated headings are made unique with a suffix, such as email and email_2, so the generated YAML does not overwrite a value.
Can I convert a CSV that uses semicolons or tabs?
Yes. Select comma, semicolon, tab, or pipe in the converter's separator menu to match the file.
Does the converter support nested YAML objects?
It creates a flat list of records from CSV columns. It does not infer parent-child relationships or generate nested mappings.
Is my CSV file uploaded?
No. The page reads the selected file in your browser and generates the YAML locally.
Related converters
Convert structured data with CSV to JSON, or turn YAML records back into CSV with YAML to CSV. See all CSV tools for more options.