How to Convert CSV to JSON Online (or JSON to CSV)
Turn table data into clean JSON (or the other way round) in your browser — delimiter-aware, header-aware, and completely private.
Why convert CSV to JSON
CSV is how data lives in spreadsheets and exports; JSON is how most APIs and frontends expect it. Moving between the two is a daily chore for developers, analysts and automation work.
A converter that respects headers, quoted fields and delimiters turns a messy export into ready-to-fetch data in one step.
Converting with structure in mind
The CSV ↔ JSON tool treats the first row as keys and maps every following row to an object, so your JSON mirrors the table instead of becoming a flat list of strings.
It handles the fiddly parts — comma, semicolon and tab delimiters, quoted values containing separators, and consistent types — so the output parses cleanly on the first try.
Both directions, in your browser
The same tool goes the other way: paste JSON and get a properly escaped CSV you can drop straight into Excel or Google Sheets.
Everything is parsed locally, which keeps the conversion instant and keeps proprietary data out of third-party services.
Try it free — CSV ↔ JSON Converter
Convert CSV to JSON, or JSON to CSV, with configurable delimiters. Handles quotes and newlines inside cells.
Open CSV ↔ JSON Converter