Numbers that work better — on Earth, in space, in art, and beyond
Join the Community →Space Ordinals are a set of ten circular symbols (0–9) designed for orientation-independent numbering. Each symbol contains a number of line segments equal to its value, remaining readable when rotated, partially covered, or viewed from any direction.
Open and free to use—for learning, industry, and commercial projects.
Each symbol contains a number of line segments equal to its value.
Rotate and partially cover the symbols to test their readability from any orientation.
Try the Demo →Map Space Ordinals onto a 3D tube. Wrap them around the surface and rotate to see every side.
Explore the Tube →A short, high-energy look at rotated numbers and markings on pipes—and how Space Ordinals address both.
Watch on YouTube →How Space Ordinals stay readable even when heavily damaged or partially covered.
Learn More →Play a quick demo of the board game: draw Space Ordinals from the Nebula, join sequences, and build constellations.
Play the demo →Connect symbols to form constellations in this space-themed strategy game.
Learn more →Real-time clock displaying time with universal ordinal symbols.
View the Clock →Trace and draw Space Ordinals. Great for kids and anyone learning the symbols.
Start Practicing →Connect the dots using Space Ordinal numbers to reveal a hidden picture.
Try It →Conversations, stories, and deep dives into Space Ordinals.
Listen Now →In-depth exploration of the philosophy, design principles, and vision behind Space Ordinals.
Read the Full Paper →Official SVG symbol files for designers and developers.
Get the Files →The inventor behind Space Ordinals and the field experience that shaped the system.
Read More →Space Ordinals (also called MONAN – Multi Orientation Non-Ambiguous Notation) are geometric numerals where the count of line segments equals the numerical value. Primary use cases include zero-gravity environments, orientation-independent displays, and robust visual communication. Each symbol remains readable when rotated or partially covered.