CSV / Excel ↔ JSON
Effortlessly convert between spreadsheet formats and JSON. Support for .csv, .xlsx, and .xls files with 100% local, privacy-first processing.
Input (CSV or JSON)
Supports .csv, .xlsx, .xls
Converted Output
Input (CSV or JSON)
Supports .csv, .xlsx, .xls
Converted Output
The Bridge Between Data and Code
Spreadsheets are great for data entry, but JSON is the language of the web. This tool simplifies the workflow for developers who need to seed databases, mock APIs, or process legacy data exports.
By using SheetJS and PapaParse, we ensure high-fidelity conversion that handles special characters, varying delimiters, and complex cell types natively in your browser.
Frequently Asked Questions
You can either paste your raw CSV text into the editor or upload a .csv file. Our tool will automatically parse the headers and create a structured JSON array of objects.
Yes! You can upload .xlsx and .xls files. The tool will read the first sheet of your workbook and convert it to JSON instantly.
Absolutely. Paste your JSON array into the input field and click 'JSON to CSV'. It will generate a downloadable CSV string with proper headers.
Since the conversion happens entirely in your browser, the limit depends on your device's memory. We recommend files under 10MB for the best experience.