Editor xls online

Edit Excel spreadsheets directly in your browser. Open, modify, format cells, calculate formulas, and export XLS/XLSX files.

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About This Tool

This online Excel editor allows you to work with spreadsheet files directly in your web browser without any software installation. Upload your XLS or XLSX files, edit cell contents, apply formatting (bold, italic, text color, background color), insert formulas, and export the modified spreadsheet. The tool supports basic Excel operations including arithmetic calculations, cell references, and common functions like SUM, AVERAGE, MIN, and MAX. All processing happens client-side for privacy and speed.

Save your calculation history with a free account

How to Use

Click the upload area or drag & drop an Excel file (XLS/XLSX)
Edit cells by double-clicking or selecting and typing
Use the toolbar to format text (bold, italic, color)
Apply formulas by typing = followed by the formula (e.g., =A1+B
Click 'Export as Excel' to download the modified file
Click 'Export as CSV' for a comma-separated version
Use 'Clear All' to start a new spreadsheet

Frequently Asked Questions

Find Quick Answers

What file formats are supported?

The editor supports both .xls and .xlsx Excel file formats for import. For export, you can download as .xlsx (Excel) or .csv (comma-separated values).

Are my files uploaded to a server?

No, all file processing happens entirely in your browser. Your data never leaves your computer, ensuring complete privacy.

What Excel functions are supported?

The editor supports basic arithmetic operations (+, -, *, /), cell references (A1, B2), and functions: SUM, AVERAGE, MIN, MAX, COUNT. More advanced Excel functions are not available.

Can I edit very large Excel files?

For performance reasons, the editor is optimized for spreadsheets up to 1000 cells. Very large files may load slowly or have limited functionality.

Does it work on mobile devices?

Yes, the editor is fully responsive and works on smartphones and tablets, though the experience is best on larger screens.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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