DOCM to RB Converter

Convert DOCM to RocketBook RB — free online

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Niche Device Support

RB format ensures your DOCM content is readable on RocketBook e-readers — bridging modern Word documents to legacy devices.

Safe and Clean

All macro code is stripped. Uploaded DOCM files are deleted after conversion and RB results are purged within 24 hours.

Server-Side Processing

Convertio does all the work on cloud servers. No local ebook tools or Word installation needed on your device.

How to convert DOCM to RB

1

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

2

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

3

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

About formats

DOCM is a macro-enabled document format for Microsoft Word, introduced with Office 2007 as part of the Office Open XML family. Structurally identical to DOCX — a ZIP archive containing XML parts for document content, styles, themes, and media — DOCM adds the ability to store and execute VBA (Visual Basic for Applications) macro code within the document. The separate .docm extension was a deliberate security measure: users and administrators can distinguish macro-containing files by extension alone, and group policies can restrict macro-enabled formats while allowing standard DOCX documents to open freely. DOCM files store VBA projects in a vbaProject.bin stream within the ZIP package alongside the same XML document content used by DOCX. Macros in Word documents enable automated report generation, custom form processing, document assembly from templates and data sources, and integration with external systems. One advantage is document-level automation — a DOCM file can include routines that populate content from databases, enforce formatting rules, validate fields before submission, or generate derivative documents automatically. The format preserves full compatibility with the OOXML specification, so all standard Word features — styles, tracked changes, comments, embedded media — work identically to DOCX. DOCM is supported by Microsoft Word on Windows and macOS, with macro execution limited to the desktop application.
Developer: Microsoft
Initial release: January 30, 2007
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 DOCM to RB?

RB is the RocketBook ebook format — useful for legacy RocketBook e-readers that need their own native file format for reading.

What reads RB files?

RocketBook devices are the primary readers. Some legacy ebook management tools and Calibre can also handle RB files on desktop.

Is formatting preserved?

Basic text content and paragraph structure carry over. RB is a simple ebook format, so complex Word layouts may simplify.

Are macros stripped out?

Yes — RB does not support macros or executable code of any kind. All VBA automation from the DOCM is removed during conversion.

Is DOCM to RB free?

Basic conversion is free. Convertio premium plans provide additional capacity for users with higher volume needs.

Can I batch-convert files?

Yes — upload several DOCM files at once and Convertio will convert them all to RB format in a single batch session.