Dolphin CSV to JSON

Convert CSV to JSON online in seconds — no signup, no upload, no limits. Paste your CSV or drop a file, click Convert, and get a clean JSON array of objects. Unlike online converters that upload your data to a server, this tool processes everything locally in your browser using pure JavaScript. Handles quoted fields, embedded commas, and auto-detects delimiters. Safe for spreadsheets, database exports, or any tabular data.

How do I convert CSV to JSON?

Paste your CSV text or drop a CSV file into the tool. The delimiter is auto-detected (comma, tab, semicolon, or pipe). Click Convert and get a formatted JSON array of objects instantly. Copy or download the result.

Does it handle quoted fields with commas?

Yes. The parser fully supports RFC 4180 CSV quoting rules. Fields wrapped in double quotes can contain commas, newlines, and escaped quotes (""). For example, "New York, NY" is parsed as a single field.

Is my CSV data safe?

Yes. Unlike online converters that upload your file to a server, this tool processes everything in your browser using pure JavaScript. Your CSV data never leaves your device — no server, no cookies, no tracking.

What delimiters are supported?

The tool auto-detects comma (,), tab, semicolon (;), and pipe (|) delimiters by analyzing the first line of your CSV. You can also manually select the delimiter if auto-detection doesn't match your file.