Toolnettofficial
    ToolsAI WorkflowsBlogNewsPremium
    Go Pro
    Fast
    Secure
    Private
    No signup required

    Tools

    • PDF Tools
    • Image Tools
    • Media Tools
    • Text Tools
    • Developer Tools

    Company

    • About
    • Blog
    • Premium
    • Roadmap
    • API AccessSoon

    Legal

    • Privacy Policy
    • Terms of Service
    • Cookie Policy
    • GDPR

    Support

    • Help Center
    • Contact
    • Feedback
    • Status

    Premium

    • Pricing
    • Pro Features
    ToolnettA RaftApps Project

    Made with by RaftApps

    © 2026 Toolnett. All rights reserved.

    Free Online Merge Excel Files & Combine Spreadsheets Online

    Combine multiple Excel files

    Verified Local Processing (100% Client-Side)

    Your data never touches our servers. All logic executes in your browser sandbox using WebAssembly (WASM). No uploads, no logging, zero data retention.

    Verify in Network Tab
    Offline-Ready Security

    Merge Excel

    Combine multiple Excel workbooks into a single file with multiple sheets.

    Sponsored
    Ad Placement

    Support Toolnett: Go premium to remove ads and unlock advanced WASM features.

    Remove Ads

    About Merge Excel

    Combine multiple Excel workbooks into one online for free. Merge sheets from various files into a single multi-sheet spreadsheet. 100% private.

    Key Features

    • Combine multiple workbooks into a single file
    • Automatic sheet name collision handling
    • Support for both .xlsx and .xls formats
    • Fast local-only document assembly

    How to Use

    1. 1Select all the Excel files you want to combine
    2. 2The tool merges sheets into a new workbook
    3. 3Download your consolidated Excel file

    Frequently Asked Questions

    Everything you need to know about Merge Excel Files.

    Combine Multiple Excel Files into One Workbook

    Tired of copying and pasting sheets between different Excel windows? Our free Excel merger allows you to combine any number of XLSX and XLS files into a single new workbook. Each original file is preserved as one or more sheets in the final consolidated document.

    Organized Data Management

    Our tool handles sheet name collisions automatically, ensuring your data is never overwritten. It's the perfect solution for combining monthly reports, consolidating branch data, or preparing year-end summaries from multiple sources. Get a unified view of your data in seconds.

    Private Document Assembly

    Corporate workbooks often contain confidential financial projections and strategy. Toolnett's secure Excel merger works 100% on your device. Your workbooks are never uploaded, making this the safest way to merge sensitive spreadsheets online.

    More from Excel

    View category

    Excel to PDF

    Export sheets as PDF reports

    Excel to CSV

    Convert Excel to CSV format

    CSV to Excel

    Convert CSV to XLSX format

    Excel to JSON

    Extract spreadsheet data as JSON

    Coming Soon: Toolnett Pro

    Level Up Your Workflow

    We're building advanced, WASM-powered features for power users. Help us prioritize by selecting what you need most.