CSV to JSON Converter

Convert CSV data — with a header row and fully quoted fields — into pretty-printed JSON, ready for your code or API.

CSV (first row = headers)

name,email,notes
Alice,alice@example.com,"Loves ""big, bold"" ideas"
Bob,bob@test.org,"Line one
Line two"

JSON output

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How it works

Naive CSV parsing — splitting on commas — breaks the moment a field contains a comma, which is why quoted fields exist. This converter reads the CSV character by character with a small state machine: inside quotes, commas and line breaks are treated as ordinary field content, and a pair of quotes ("") collapses to a single literal quote. The first row becomes the property names of each JSON object, and every following row becomes one object; short rows get empty strings for missing columns. The result is pretty-printed with two-space indentation so it is easy to read and paste into JavaScript, Python, or an API request body.