Drop file here. 150 MB maximum file size.
An XLSX file is a spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. Data are stored in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain tables, mathematical functions, styles and formatting. XLSX files are commonly used to store financial data and backup simple or complex mathematical models.
An AZW3 file is an eBook created in KF8 format, Amazon & apos; succeeding .AZW format. Supports newer features such as HTML5 and CSS3 as well as many other formatting features. AZW3 often includes DRM protection and is used as a download format for many Amazon eBooks.
Access powerful and secure free online XLSX tools to convert, view, edit, merge, split, and compare XLSX files β all without installing any software. Our tools support the .XLSX (Microsoft Excel Open XML Spreadsheet) file extension and run smoothly in any modern browser.
Select a tool below to explore features and manage your XLSX files directly from your device with ease.
Chose or drag & drop your XLSX file, click Convert to AZW3, and download the AZW3 file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert XLSX to AZW3 in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert XLSX to 100s of file formats, without any limit, registration and downloading, 100% free and online XLSX converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
About FileProInfo: FileProInfo is a trusted platform dedicated to file formats and software programs. We provide accurate technical details, easy-to-use navigation, and advanced search capabilities to help users explore, manage, and convert file types efficiently.
Listed file converters are from the wide range of online file converter.
These are the most polular file/document converters based on the user's review and usage on the FileProInfo.