CSV to Excel Converter – Convert CSV to XLSX & Excel to CSV Free Online

Convert CSV to Excel (XLSX) for rich spreadsheets, or export Excel to CSV for system imports and data pipelines — all in your browser.

or
Upload CSV File

What is this tool?

A CSV to Excel Converter is a free browser-based tool that transforms CSV (Comma-Separated Values) files into Excel XLSX workbooks — and exports Excel files back to CSV in the opposite direction. CSV is a plain-text, universal format ideal for databases and pipelines, while Excel (XLSX) supports rich formatting, formulas, and multiple worksheets. Data analysts, accountants, project managers, and developers regularly need to move data between these two formats when working with reporting tools, CRMs, ERPs, or custom data workflows. Conversion runs entirely in your browser — your files never leave your device.

How to use this tool?

1. Select the conversion direction: click "CSV → Excel" or "Excel → CSV". 2. Click "Upload" or drag and drop your CSV or XLSX file onto the tool. 3. If converting Excel to CSV and the file has multiple sheets, select the sheet you want to export. 4. Click "Convert" to process the file in your browser. 5. Preview the data table to verify columns and rows look correct. 6. Click "Download" to save the converted XLSX or CSV file to your device.

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