What ㌙ means
It means “gram-ton”: a metric ton of 1,000 kilograms. That distinguishes it from the differently sized U.S. short ton and British long ton.
Unicode preserves the form for compatibility with older Japanese character-set standards (JIS X 0208 and JIS X 0213). It packs グラムトン into one full-width East Asian cell and stays upright in vertical Japanese text.
Don't confuse it with
2Questions people ask
1Why does ㌙ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type ㌙
Windows (Word)
Alt+XType 3319, then Alt+X to get ㌙.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “square guramuton”.
Linux
Ctrl+Shift+UType 3319, then Enter or Space.
HTML
㌙CSS
\3319How to type ㌙
Search a Unicode character map for `SQUARE GURAMUTON`, or enter `3319` in an input method that accepts hexadecimal code points.
Codes and encoding1 code points
HTML decimal
㌙
HTML hex
㌙
CSS content
content: "\3319";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E3%8C%99
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.