CSV to JSON Converter
Convert CSV (comma-separated values) to a JSON array of objects. The first row is treated as the column headers, and every following row becomes one object keyed by those headers.
How csv to json works here
- The first row must contain the column names — they become the JSON keys.
- Quoted fields are supported, including commas, line breaks and escaped "" quotes inside a value.
- Values stay as strings (CSV has no types); cast them yourself if you need numbers or booleans.
Frequently asked questions
- Does the first CSV row have to be a header?
- Yes — this tool uses the first row as the JSON keys. If your file has no header row, add one first so each column gets a name.
- Are commas inside a value handled?
- Yes. Wrap a value in double quotes if it contains a comma, a line break or a quote character, exactly as in standard CSV (RFC 4180). The parser unwraps it correctly.
- Is my data uploaded anywhere?
- No. Parsing and conversion happen entirely in your browser, so your data never leaves your device.