Excel Sheet & Workbook Merger
Upload multiple Excel workbooks to combine sheets into a single master file. Append rows vertically, align columns, or merge records on a key column.
Drag & drop multiple Excel files here, or browse
Supports selecting multiple .xlsx, .xlsm, and .csv files at once
Why use client-side Excel merging?
Merging monthly division reports, regional sales sheets, or marketing campaign exports often involves tedious copying and pasting across dozens of tabs.
With Excel Sheet Merger, you can drop all your quarterly workbooks into the browser. The tool extracts each worksheet, automatically normalizes column positions, aligns headers, and lets you output a clean, unified merged.xlsx in seconds.
Frequently asked questions
How does the Excel Merger combine multiple workbooks?
You can select between three merge modes: "Append Rows" stacks records vertically, "Match Columns" aligns column headers across sheets even if they appear in different orders, and "Merge by Key" joins records matching a shared column such as Customer ID.
Can I choose specific sheets from multi-sheet files to merge?
Yes. Once you upload your workbooks, each file and its individual sheets appear with checkboxes so you can include or exclude sheets as needed.
Does it output a native Microsoft Excel (.xlsx) file?
Yes. The combined dataset is packaged into a valid OpenXML (.xlsx) spreadsheet with styled header formatting that opens cleanly in Excel, Google Sheets, or Numbers.
Are any files uploaded to an external server?
No. All workbook extraction, column alignment, and file writing execute 100% locally in your browser memory.