My data has commas inside values — will it break?

No, as long as those fields are quoted (Excel and Google Sheets quote them automatically on export). The parser follows standard CSV quoting rules, including escaped quotes inside quoted fields.

What does the header option do?

When on, the first row's values become the JSON keys and each data row becomes an object like {"name": "Asha"}. When off, every row becomes a plain array of strings.

My file uses semicolons — why?

Locales that use the comma as a decimal separator (much of Europe) export CSV with semicolons instead. Pick the semicolon delimiter and it converts identically.

CSV to JSON Converter

Turn spreadsheet CSV data into a clean JSON array.

About the CSV to JSON Converter

CSV is the language of spreadsheets; JSON is the language of APIs and applications. Moving data from one world to the other is a constant chore — importing a customer list into a web app, seeding a database from an Excel export, feeding spreadsheet data to a script. This converter does it properly: paste your CSV, choose the delimiter, and get a JSON array ready to use.

"Properly" matters, because naive converters split on every comma and mangle real-world data. This one implements the actual CSV quoting rules: fields wrapped in double quotes can contain commas, line breaks and escaped quotes ("") without breaking the structure — so an address like "12, MG Road, Pune" stays one field. Excel and Google Sheets both export in this format, and European locales that export with semicolons are covered by the delimiter option, as are tab-separated files.

With the header option on (the default), the first row supplies the JSON keys and each subsequent row becomes an object — the shape almost every API and import script expects. Turn it off and you get an array of arrays instead, useful for positional data. Conversion happens entirely in your browser, so customer lists and financial exports never touch a server. For the reverse direction, the JSON to CSV converter linked below turns API output back into a spreadsheet-friendly file.

Frequently asked questions

My data has commas inside values — will it break?: No, as long as those fields are quoted (Excel and Google Sheets quote them automatically on export). The parser follows standard CSV quoting rules, including escaped quotes inside quoted fields.
What does the header option do?: When on, the first row's values become the JSON keys and each data row becomes an object like {"name": "Asha"}. When off, every row becomes a plain array of strings.
My file uses semicolons — why?: Locales that use the comma as a decimal separator (much of Europe) export CSV with semicolons instead. Pick the semicolon delimiter and it converts identically.

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