100% Client-Side:XLSX, CSV, TSV, Markdown & JSON parsing runs locally in browser memory with zero server uploads.
Zero Microsoft Login • Offline Chrome / Linux PWA • Styled .XLSX Export

Free Excel Online Editor in Your Browser (No Account Needed)

Open, edit, format, merge, and convert .xlsx, .xls, .ods, and .csv files on Windows, Mac, ChromeOS, or Linux right below. Click Maximize for full-screen editing or Install App to run offline.

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Zero Uploads

Excel Web & Chromebook Ready

Runs locally in Chrome, Edge, Firefox, or Safari without OneDrive sync delays or paywalls on desktop, Chromebook, or Linux.

Ctrl/Cmd Multi-Range Selection

Hold Ctrl or Cmd to select scattered cells, change fills or font colors together, and export every color cleanly into `.xlsx`.

9 Export Formats Built In

Save styled `.xlsx`, `.ods`, `.csv`, `.tsv`, Markdown `.md`, `.json`, `.jsonl`, `.yaml`, or `.sql` straight from the top green menu.

Frequently Asked Questions

Do I need a Microsoft 365 account or OneDrive login to edit Excel online here?

No. SheetCombine opens directly in your web browser without Microsoft accounts, cloud storage, or sign-up gates. Your .xlsx, .xls, and .csv spreadsheets stay inside local browser memory.

Does SheetCombine work on Linux, Chromebook, and ChromeOS where desktop Excel is missing?

Yes. Click Install App in the top header to install SheetCombine as an offline Chrome or Edge Progressive Web App (PWA) on Linux, ChromeOS, Windows, or macOS, and click Maximize to expand the grid to full viewport.

When I finish editing online, does Download keep my cell colors and multi-sheet tabs?

Yes. Exporting as Excel Workbook (.xlsx) writes all worksheet tabs along with cell background fills, bold/italic/strikethrough weights, font colors, alignments, and number formatting directly into the downloaded file.