CSV to JSON

A CSV to JSON converter transforms comma-separated values, the format every spreadsheet can export, into a JSON array of objects that code and APIs can consume directly. This free tool reads the first line of your CSV as the header row and uses those column names as the keys for each object, then turns every following row into one JSON object. So a file with columns name, email, and age becomes an array where each entry is {"name": ..., "email": ..., "age": ...}. The trickiest part of parsing CSV is quoting, and this tool handles it correctly: a field wrapped in double quotes can contain commas, line breaks, or escaped quotes without breaking the row, following the common RFC 4180 convention. That means an address like "221B Baker St, London" stays as a single field rather than splitting into two columns. One thing worth knowing is that CSV has no concept of data types. Every cell is just text, so by default numbers and booleans come out as JSON strings, for example "42" rather than 42. If your downstream code needs real numbers, dates, or booleans, convert them after parsing or enable number inference if available. Watch out for ragged rows, where a line has more or fewer fields than the header, and for files that lack a header line entirely, since the first data row would then be misread as the keys. CSV to JSON conversion is everyday work when seeding a database from a spreadsheet, feeding a REST API that expects JSON, building test fixtures, or moving data between tools that speak different formats. Everything runs locally in your browser, so even a CSV full of customer records or financial data is never uploaded.