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Dozenal Society of America
Promoting base twelve and alternative base mathematics
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The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

Why Join the Society?

Joining the Dozenal Society of America is a basic act for anyone committed to dozenal counting and arithmetic, or even just interested in alternative bases. As one of very few organizations committed to the study of alternative bases, and certainly the oldest and most storied one, the DSA is the venue of choice for these topics.

Members of the DSA can expect the following benefits:

In the words of one of our founders, Ralph "Whiskers" Beard:

If "playing with numbers" has sometimes fascinated you, if the idea of experimenting with a new number base seems intriguing, if you think you might like to be one of the adventurers along new trails in a science which some have thought staid and established, and without new trails, then, whether you are a professor of mathematics of international reputation, or merely an interested pedestrian who can add, subtract, multiply, and divide, your membership in this Society may prove mutually profitable, and is cordially invited.

We are looking forward to your contact and participation.