PDFsun.com allows you to convert xlsx files to rb quickly, easily and entirely online. Upload your files to our platform, let our xlsx to rb converter do its magic and download your newly created document right away. No more hassle, convert xlsx to editable rb in just a few steps. Learn how to convert xlsx to rb with PDFsun.com by following the steps above.

How to convert XLSX to RB

Step 1

Upload xlsx-file(s)

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

Step 2

Choose "to rb"

Choose rb or any other format you need as a result (more than 200 formats supported)

Step 3

Download your rb

Let the file convert and you can download your rb file right afterwards

File extension .XLSX
Description XLSX is a file format created with Microsoft Excel, version from 2007 and younger. This file is a spreadsheet. All data distributed document and stored in the cells. Each cell has a unique address, which is denoted by the letters and Arabic numerals. XLSX file format is based on the Open XML. To reduce the size of the file is compressed ZIP.
File extension .RB
Description Was developed for the first mass-produced e-book reader – Rocket eBook. The format is written in Ruby. RB files are containers holding the entire content for a Rocket eBook device. It has DRM protection capability which is not used in the books published at present due to the format’s lack of popularity.

Why Convert XLSX to RB?

The main benefit of converting xlsx to Rocket eBook is the ability to edit the text directly within the file. This is especially helpful if you want to make significant changes to your xlsx, as most people are comfortable and familiar with Rocket eBook. If you're wondering how to change xlsx to rb for free, it's important to note that quality of the resulting rb is also important, not just the cost. While there are several free xlsx to rb converters, the majority do not sufficiently maintain the original formatting and spacing of the file. Our conversion tool delivers a result that looks like your original xlsx file.


We created our xlsx to rb free converter tool so you no longer need to waste time retyping files in rb. Within seconds you can change your xlsx to a rb and make the necessary edits. Not only is our xlsx to rb converter free, online and available whenever you need it, we allow users to convert 2 additional files per month for free too. So go ahead and convert xlsx to rb online for free. We think you will be happy with the results !

XLSX Convert to