RB Converter

Convert RB ebooks to TXT, DOC, EPUB and more free online

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Format Conversion Paths

RB connects to 108+ output formats on Convertio — 274 conversion directions from this legacy ebook format to modern standards.

Nothing to Configure

Upload the ebook, select a format, and convert. The entire flow is designed for simplicity with no confusing settings or prerequisites.

Batch Legacy Conversion

Sitting on a collection of old Rocket eBooks? Upload them all and batch-convert to EPUB or TXT to bring your library into the modern era.

Rocket eBook Format

RB is one of the earliest ebook formats from the Rocket eBook era. Convertio preserves these vintage digital books through format conversion.

Works Everywhere

Access Convertio from any web browser on any operating system. Convert RB from a desktop, laptop, tablet, or even your smartphone.

Files Removed After Use

Uploaded ebooks are deleted as soon as conversion completes. Results are automatically purged within 24 hours for your complete privacy.

How to convert RB file

1

Upload the RB ebook from your Computer, or bring it in via Google Drive, Dropbox, or a URL.

2

Choose a target format from 108+ available options — TXT, DOC, FB2, AZW3, EPUB, and more.

3

Confirm the ebook content is recognized and the output format is set correctly.

4

Click Convert and save the output to your device once the conversion is done.

About format

RB is the native ebook format of the Rocket eBook, one of the first commercially available dedicated e-reading devices, developed by NuvoMedia and released in October 1998. Founded by Martin Eberhard and Marc Tarpenning — who later co-founded Tesla Motors — NuvoMedia designed the Rocket eBook as a handheld device with a reflective LCD screen, capable of storing approximately ten books in its internal memory. The RB format packages HTML-based content along with embedded images, metadata, and a table of contents into a single binary container optimized for the device's limited hardware. Content was purchased and downloaded through NuvoMedia's RocketLibrarian desktop software. A notable advantage of the format was its early support for bookmarking, annotation, dictionary lookups, and adjustable font sizing — features now standard on modern e-readers but revolutionary in the late 1990s. The Rocket eBook demonstrated viable commercial demand for dedicated reading devices, paving the way for subsequent platforms from Sony, Amazon, and others. NuvoMedia was acquired by Gemstar-TV Guide International in 2000, which discontinued the device line in 2003. While RB files are largely a historical curiosity today, they can be converted to modern formats using ebook management tools, and the format remains significant as a pioneering chapter in the evolution of digital reading.
Developer: NuvoMedia
Initial release: 1998

Frequently Asked Questions

Why convert RB ebooks?

RB is a Rocket eBook format with virtually no modern reader support. Converting to EPUB, FB2, or TXT keeps your ebooks accessible on current devices.

What software reads RB?

The original Rocket eBook device and some legacy software can read RB. Calibre may import it, but converting to EPUB or TXT is far more practical.

Can Convertio convert RB to EPUB?

Yes. Upload your RB ebook, choose EPUB, and Convertio transforms the legacy content into a modern ebook format any contemporary reader can open.

Is converting RB free?

Convertio offers free conversions for RB ebooks. Upload the file, select the format you need, and download — completely free.

Does the conversion keep the original text intact?

Convertio extracts and preserves the text content from RB ebooks, producing clean, readable output in whichever format you select.

RB conversion quality rating

4.4 (678 votes)
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