What happens if sheets have columns in different orders?

Our smart header matching aligns columns by their header name across all sheets. If Sheet 1 has 'Name, Phone, City' and Sheet 2 has 'City, Name, Phone, Email', values are mapped to the correct columns automatically, creating a clean union of all columns.

Is my spreadsheet data safe and private?

100% yes. The merger runs completely client-side in your web browser using JavaScript. Your files are never uploaded to any remote server or stored in the cloud. It is fully GDPR, HIPAA, and confidentiality safe.

100% Free • Private • In-Browser

Merge Multiple Excel Sheets into 1 Sheet or CSV

Combine multi-sheet workbooks or multiple Excel files into a single consolidated sheet. Add source sheet name tags to every row automatically with smart column alignment.

Drop your Excel or CSV files here

or click to browse from your computer

.xlsx .xls .csv Multi-Sheet Supported

100% Private & Secure — processed entirely in your browser. Files never touch any server.

Merge Options & Source Tracking

Source Tracking Columns

Add "Sheet Name" Column Recommended Inserts a column indicating which worksheet each row came from (e.g. "January", "Store #104").

Column Label:

Add "File Name" Column Useful when merging multiple different workbooks to identify the original file source.

Column Label:

Source Column Position

Insert as First Column Append as Last Column

Headers & Column Alignment

First Row Contains Column Headers Treats row 1 of each sheet as headers and excludes duplicate header rows from data.

Column Matching Mode

Data Cleaning

Skip Blank / Empty Rows Ignores rows where all cells are empty.

Trim Text Whitespace Strips accidental leading/trailing spaces around cell values.

Remove Duplicate Rows Keep only unique records across all merged sheets.

How to Merge Multiple Excel Sheets into One

No VBA macros, no complex Python scripts, and no Power Query headaches required.

Upload Spreadsheets

Drag and drop your multi-sheet workbook or select multiple individual Excel (.xlsx, .xls) and CSV files. All sheets are parsed locally in milliseconds.

Tag Sheet Names

Keep the "Add Sheet Name Column" toggle enabled. Every row in your final table will clearly specify which worksheet it came from so you never lose data context.

Download in 1 Click

Review the instant live preview, then download a single consolidated Excel workbook (.xlsx) or UTF-8 encoded CSV ready for CRM import or analysis.

Popular Use Cases

Why thousands of businesses and marketers merge sheets every day.

Consolidating WhatsApp Lead Lists

Merge contacts exported from different WhatsApp groups, customer labels, or chat history into a master marketing database with source sheet tags.

Monthly & Quarterly Financial Reports

Combine 12 monthly sheets (Jan through Dec) into one annual ledger with a "Month" column indicating where each transaction was recorded.

Multi-Branch & Regional Store Sales

Combine separate sheets sent by regional store managers into a single unified table for pivot table summaries and executive dashboards.

Event Registrations & Surveys

Aggregate attendee lists collected from multiple booths, dates, or webinar sessions into a single CSV formatted for immediate CRM or email tool import.

Frequently Asked Questions

Common questions about combining Excel workbooks and sheets.

Can I merge multiple sheets from a single Excel workbook? +

Yes! Simply drop your workbook file into the upload box. The tool will automatically detect every worksheet tab inside it. You can select all sheets or pick specific ones to merge into a single consolidated sheet.

How does the "Sheet Name" column work? +

When enabled, this tool adds a new column (by default titled "Sheet Name") to your consolidated table. Each row will display the exact name of the tab where that row was found (for example: "North Branch", "Q1 Sales", "March"). You can customize the column header name and place it as the first or last column.

Can I merge multiple separate Excel files at once? +

Yes. You can select or drop multiple .xlsx, .xls, and .csv files simultaneously. You can also turn on the "Add File Name Column" option so each row records both the source workbook file name and the worksheet tab name.

What if my sheets have columns in different orders or extra columns? +

Our "Match by Header Name (Union)" mode automatically aligns columns based on their header text. If Sheet A has columns Name, Phone, City and Sheet B has columns City, Name, Phone, Email, the columns are matched correctly and Email is added as a new column with blank cells for Sheet A.

Is there any row limit or file size restriction? +

Because all processing takes place directly in your browser's memory, there are no artificial server limits. You can easily merge tens of thousands of rows across dozens of sheets without paying for subscriptions or waiting in file processing queues.