CSV to Excel or JSON

100% Client-Side

CSV to Excel or JSON parses CSV (comma-separated values) data and exports it to structured JSON arrays or Microsoft Excel (.xlsx) formats. It runs locally using PapaParse and SheetJS libraries, allowing you to manipulate and format spreadsheets instantly.

Open CSV to Excel or JSON

How It Works

Select CSV

Upload your raw CSV spreadsheet file from your local directory.

Choose Format

Select whether you want to generate a structured JSON array or a Microsoft Excel (.xlsx) file.

Export Sheet

Click Convert to parse and rewrite table rows locally and download the result.

Frequently Asked Questions

Does this tool support custom delimiters?

Yes. PapaParse automatically detects standard separators, including commas, tabs, and semicolons.

Is my spreadsheet data uploaded to a server?

No. The entire parsing and Excel reconstruction is completed client-side inside your browser memory.

Can it convert massive CSV datasets?

Yes. The optimized engine processes thousands of data rows in less than a second.