convert-csv.com logo convert-csv.com

Convert CSV to YAML

Convert CSV into clean YAML documents, ideal for config files.

100% Secure - your files are processed in your browser and never sent to a server.
Drop your file hereor click to browseSupports CSV, TSV, or TXT files (.csv, .tsv, .txt) (Max 100MB)

**CSV to YAML conversion** is the process of transforming Comma-Separated Values data into YAML (YAML Ain't Markup Language), a human-readable data serialization format defined by the YAML 1.2 specification. YAML is the preferred format for configuration files, CI/CD pipelines (GitHub Actions, GitLab CI), and infrastructure-as-code (Kubernetes, Docker Compose). This tool converts CSV data into clean YAML documents, with each row becoming a YAML mapping (key-value pair structure) or a sequence entry. You can configure the input delimiter, toggle whether the first row contains headers, and choose between 2-space and 4-space indentation. The converter produces YAML that follows the YAML 1.2 specification, with proper quoting of strings that could be misinterpreted as other types (like "yes", "no", or numeric strings). When the header option is enabled, each row becomes a mapping with column names as keys. When disabled, rows become sequences of values. All processing runs in your browser, which matters because CSV data being converted to YAML often contains configuration secrets, API keys, or deployment parameters that should not be uploaded to external services.

How to use the Convert CSV to YAML tool

  1. Load your CSV data: Drag and drop your CSV file, choose a file from your file explorer, or paste CSV data directly into the paste area.
  2. Configure output settings: Select the input delimiter, toggle header row, and choose YAML indentation: 2 spaces or 4 spaces.
  3. Convert to YAML: Click the "Convert Data" button to convert each CSV row into a clean YAML document.
  4. Export results: Copy the YAML output to your clipboard or download it as a file.

Frequently asked questions

What YAML structure does the tool generate?
With headers enabled, each CSV row becomes a YAML mapping (key-value pairs). Without headers, rows become sequences (arrays of values). The output is a valid YAML document following the YAML 1.2 specification as defined by the YAML Working Group.
Can I choose the indentation width?
Yes. You can select 2-space indentation (the most common YAML convention, used by Kubernetes and Docker) or 4-space indentation. Both produce valid YAML output per the YAML 1.2 specification.
Does the tool handle values that look like YAML keywords?
Yes. Values like "yes", "no", "true", "false", and numeric strings are properly quoted in the output to prevent YAML parsers from interpreting them as booleans or numbers. This follows the YAML 1.2 core schema type resolution rules.
Is the output compatible with Kubernetes and Docker Compose?
Yes. The generated YAML follows the YAML 1.2 specification and is compatible with Kubernetes manifests, Docker Compose files, Helm charts, and other YAML-based configuration systems. Kubernetes uses YAML as its primary configuration format per the Kubernetes API conventions.
Can I generate a YAML list instead of key-value pairs?
Yes. Disable the header option to generate YAML sequences (lists) instead of mappings. Each row becomes a list entry rather than a key-value structure, following the YAML 1.2 sequence notation.

Related tools