CSV to JSON Converter
Convert CSV data into structured JSON with RFC 4180-aware parsing, custom delimiters, and automatic type coercion, fully in your browser.
Delimiter
CSV Input
JSON Output
Frequently Asked Questions
Is my data sent to a server when using the CSV to JSON Converter?
No. The CSV to JSON Converter is a fully client-side utility. All data processing, calculations, and conversions are handled locally in your browser. No input text, payloads, or keys are uploaded to any external server.
Does the converter handle quoted fields with commas or newlines?
Yes. The parser follows RFC 4180 conventions, correctly handling quoted fields that contain commas, line breaks, and escaped double quotes (`""`) without breaking the row structure.
Can I convert CSV files that use semicolons or tabs instead of commas?
Yes. A delimiter selector lets you switch between comma, semicolon, and tab, which covers the common regional variants of CSV exported from spreadsheet software in Europe and elsewhere.
Does the tool automatically convert numbers and booleans?
Yes, on a best-effort basis. Numeric-looking values are coerced to actual JSON numbers, and `true`/`false` strings are coerced to JSON booleans. This behavior is a convenience, not a strict schema — if you need every value kept as a string, you can edit the JSON output afterward.
What happens with rows that have missing or extra columns?
Ragged rows are handled gracefully. If a row has fewer fields than there are headers, the missing values become empty strings. If a row has extra fields beyond the header count, those extra fields are dropped.
Does the CSV to JSON Converter store history or cache my inputs?
No. The application runs entirely in browser memory. Once you refresh the tab, navigate away, or close the window, all inputted details, logs, and outputs are completely cleared.
Is the CSV to JSON Converter compatible with mobile devices?
Yes. The interface is optimized to be fully responsive. You can perform calculations, conversions, and formats on all modern mobile, tablet, and desktop web browsers.
Does the CSV to JSON Converter work offline?
Yes. Once loaded, all code and assets required to run the CSV to JSON Converter reside in your browser cache, enabling offline use without an active network connection.