Three simple steps
- Paste CSV or load a UTF-8 .csv file.
- Choose whether the first row contains headers and whether safe scalar values should be detected.
- Convert the rows, review the JSON, then copy or download it.
CSV to JSON Converter
Convert CSV rows into a JSON array, with optional header mapping and safe scalar type detection.
Parse quoted fields
Optional type detection
Copy or download JSON
CSV input
Paste CSV or drop a UTF-8 .csv file.
JSON result
Converted records appear here.
Document Tools guide
How to use CSV to JSON
Turn comma-separated tables into structured JSON records for APIs, scripts, configuration, and data interchange.
Conversion behavior
- Quoted commas, doubled quotes, and quoted line breaks are parsed as CSV data.
- Without a header row, each CSV row becomes a JSON array.
- Type detection converts booleans, null, and safe numbers while leaving unsafe integer identifiers as strings.
Frequently asked questions
What happens when header names repeat?
Conversion stops because JSON objects cannot preserve two values under the same property name.
Will values such as ZIP codes stay intact?
Type detection is off by default, so every cell stays a string. Leave it off when leading zeros or exact text formatting matters.
Can CSV fields contain line breaks?
Yes. A line break inside a correctly quoted field is preserved in the JSON string.