Data utility · local parsing

Convert reliably between CSV and JSON.

Handles quoted fields, embedded newlines, and common delimiters. Your data never leaves this browser.

Supports common RFC 4180 quoting rules; conversion happens locally.

Converted output

The converted output and a table preview will appear here.

JSON FormatterJSON DiffPrompt Chunker

Data handling notes

The CSV parser preserves commas, newlines, and escaped double quotes inside quoted fields. Auto detect picks the most likely delimiter from comma, tab, semicolon, and pipe using the first logical record.

JSON to CSV accepts an array of objects, an array of arrays, or one object. Nested objects and arrays are serialized as JSON inside a cell. Check column names, nulls, number formats, and encoding before importing into a database.