Excel File Merger – Merge multiple Excel files instantly in your browser

Summary: Excel File Merger is a free web app that combines multiple Excel and CSV files into a single sheet instantly. It processes files locally in the browser, ensuring data privacy without requiring installation or uploads.

What it does

The tool stacks data from multiple .XLS, .XLSX, and .CSV files into one continuous sheet directly in the browser. All processing occurs locally, with no server interaction.

Who it's for

It is designed for users who need to merge scattered spreadsheets quickly, such as those handling financial reports, SEO datasets, or client lists.

Why it matters

It eliminates manual copy-pasting and the need for complex or costly software, streamlining the spreadsheet merging process while maintaining privacy.