Online XLS converter
Choose file to convert
Use our online converter to effortlessly convert your documents into the woff format, completely free of charge.
How to convert a xls file?
Step 1
Upload an-file
You can select the file you wish to convert from your computer, Google Drive, Dropbox or just drag and drop it onto the page.
Step 2
Select «to xls»
Choose xls or any other of the 200+ supported formats that you wish to convert to.
Step 3
Download your xls file
Please wait for the conversion to be completed, then click on the download button to get your converted file in the xls format.
Best xls converter tool
Converting xls is fast and easy
Just drag and drop your xls files onto the webpage, and you'll have the capability to convert them over 250 different file formats, all without the need to register, provide an email address, or include a watermark.
Safe xls Conversion
Immediately upon uploading your xls files, we delete them without delay. Converted files are then removed after 24 hours. Additionally, we ensure that all file transfers are secure through advanced SSL encryption.
No Software Installation Required
There's no need to go through the inconvenience of installing any software. We conveniently handle all xls to {format2} conversions in the cloud, which implies that none of your computer's resources will be consumed in the process.
Microsoft Excel Binary File Format
| Extension | .xls |
| Category | 🔵 documents |
| Programs | 🔵 Microsoft Office 🔵 LibreOffice 🔵 Kingsoft Office 🔵 Google Docs |
| Main program | 🔵 Microsoft Office |
| Description | 🔵 The .xls format is synonymous with spreadsheets created in Microsoft Excel, especially in versions prior to 2007. This binary file format has the capability to store data in cells that are systematically arranged in rows and columns. It's also flexible enough to support formulas, charts, graphs, and a plethora of formatting features to assist with data manipulation and visualization. The .xls format was a common go-to in sectors such as business and finance, or any field that necessitated data analysis and presentation. However, the advent of the more sophisticated .xlsx format has largely overshadowed its use. |
| Technical details | 🔵 Diving into the technical details, the .xls format, the golden standard for Microsoft Excel versions prior to 2007, is capable of storing a range of spreadsheet elements, including worksheets, formulas, and macros. As a proprietary binary format birthed by Microsoft, its undocumented internal architecture has posed a significant challenge to compatibility with third-party software. The format is comprised of binary records that contain data, formatting, and embedded objects, offering the possibility of multiple worksheets, a variety of functions, and inter-sheet referencing. .xls files also have the capacity to include Visual Basic for Applications (VBA) macros, opening up avenues for automation and complex calculations. Despite the existence of alternatives like OpenOffice Calc, and options to convert between .xls and other formats such as .xlsx, the .xls format continues to hold its ground, largely due to its compatibility with older Excel versions and legacy systems. However, it's important to note that the newer .xlsx format, which made its debut in Office 2007 and harnesses XML and ZIP technologies, brings to the table improved efficiency and security features. Despite the potential security risks associated with macros, the .xls format continues to be widely used. |
| Developer | 🔵 Microsoft |
| MIME type | 🔵 application/vnd.ms-excel |