What ㎦ means
It means cubic kilometres, a unit of volume.
The raised 3 marks a cube: kilometres multiplied by themselves three times. Unicode encoded this sign for compatibility with older East Asian character sets, where a square unit form gave a Latin abbreviation one character position.
Technical; suited to measurements and tables.
As of 2026, unsupported fonts may show a box; km³ is the readable text form.
Don't confuse it with
1km³ ㎦ or km³: same unit, different sequences; Unicode compatibility conversion expands ㎦ to km3.
Questions people ask
1Why does ㎦ show as a box on some devices?
Not every system ships a font for the CJK Compatibility block. Where none is installed, the character shows as an empty box; adding a font such as Noto fixes it. The character itself is still correct and copies correctly.
More like this
9
How to type or find ㎦
- Search it as
- ㎦ · km³ · km3 · cubic kilometres · cubic km
- Shows up in
- Anything that takes text · its shape is whatever your font draws
㎦\33A6Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.