Free CSV, JSON & YAML Converter Online
Convert CSV, JSON and YAML in any direction, with delimiter and type detection and a table preview for CSV. Your data stays in your browser.
JSON output
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How to use it
- Choose a direction: CSV to JSON, JSON to CSV, YAML to JSON or JSON to YAML.
- Paste your data and set the options (CSV only).
- Copy or download the result, and check the table preview.
Frequently asked questions
Does it detect the delimiter?
Yes. It checks comma, semicolon, tab and pipe, or you can choose one.
Are numbers and booleans converted?
With type detection on, numbers and true/false become JSON numbers and booleans; empty cells become null.
Can it handle nested JSON?
Nested objects are flattened to columns like address.city. Arrays inside values are kept as JSON text.
Does it handle quotes and line breaks in cells?
Yes. Quoted fields, doubled quotes and line breaks inside cells are parsed and written correctly.
Can it convert YAML to JSON and back?
Yes. Use the YAML to JSON or JSON to YAML tab. Anchors, aliases and merge keys are resolved, and invalid YAML shows the error.
Is my data uploaded?
No. Conversion happens in your browser.
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