SubiCount — See faster, count differently

Compose any number with just two symbols

SubiCount introduces a completely new way to count and write, based on something we all naturally do: seeing without counting.

Humans recognize small quantities at a glance — especially 2 and 3. That ability, called subitizing, makes us very fast at processing even numbers and groups of 2 and 3. From that insight comes SubiCount: a notation where every decimal digit is reduced to the building blocks 2, 3, and - (zero rendered as a dash), compact (you still use zero as the decimal place-value marker), with parentheses around groups or circles around groups when handwriting.

The result?

Faster recognition of numbers because they’re built from the most natural quantities.
Shorter symbol sequences, therefore easier to remember.
A fresh way of calculating that makes your brain look at digits and patterns differently.

Examples in SubiCount:

1 → 32
5 → 23
9 → 333
100 → 32-- or (32)()()

When handwriting SubiCount, you can also circle the groups to mark hundreds, tens, etc.

SubiCount is a unique new system suited for everyday use and great for things like escape-room puzzles. Discover, test, and use it below.

Visual logic

We break numbers into natural groups (2 and 3). You’ll spot patterns faster than with classic digit runs.

Multiple notations

Dashes: 32-233-333, parentheses: (32)(233)(333), or handwritten with circles around the groups.

Practical tools

Below are a converter, a calculator,
and a typing sandbox that converts keys 0–9 live.

How to read and write SubiCount

Base mapping

0→ - • 1→32 • 2→2 • 3→3 • 4→22 • 5→23 • 6→33 • 7→223 • 8→233 • 9→333

Notations

Hyphenated: 32-233-333
Compact: 3202330333 (here 0 is the zero token and divider)
Parentheses: (32)(233)(333) () = 0
Handwritten: - circle = 0

Examples

189 → 32-233-333 → (32)(233)(333)
537 → 23-3-223 → (23)(3)(223)
821 → 233-2-32 → (233)(2)(32)
100 → 32-- → (32)()() → 320

Converter

Convert decimal ↔ SubiCount. Optionally render output as handwritten circles.

Decimal

Output as (...) circles

SubiCount

Calculator

Compute with integers. Input may be decimal or SubiCount. Division is integer division.

Mode

1) Decimal (normal) 2) Decimal → realtime SubiCount (8 ⇒ 233) 3) Input is SubiCount

Expression

Result (SubiCount): —

Result (decimal): —

Typing Sandbox

Type 0–9; the sandbox converts them to SubiCount live. Choose dashes or circles.

Enable SubiCount typing Auto-dash between tokens Write tokens as (...)

See quickly. Count smart.