CSV TO
JSON
Convert CSV data into clean JSON directly in your browser with lightning speed and absolute privacy.
Enter CSV and click "Convert to JSON".
HOW IT WORKS
PASTE CSV
Paste comma, semicolon, tab, or pipe-delimited spreadsheet data into the editor.
PARSE STRUCTURE
Click Convert to JSON to automatically map headers and handle quoted multiline strings.
COPY & EXPORT
Instantly copy formatted JSON objects or download them as a .json file.
FEATURE HIGHLIGHTS
RFC 4180 PARSING
Fully compliant with complex quoting rules, embedded commas, escaped double quotes, and line breaks.
100% PRIVATE & LOCAL
Zero server transmission and zero logging. Your application payloads remain strictly inside your browser.
DELIMITER OPTIONS
Choose comma, semicolon, tab, or pipe to match your source data.
OPTIONAL HEADER ROW
Choose whether the first CSV row supplies the JSON property names.
CLIENT-SIDE PRIVACY
ManyTinyTools operates browser-first. Your CSV data remains strictly inside local browser memory and is never uploaded, recorded, or sent to analytics.
INPUT
MEMORY
EXPORT