U+339F "㎟" Square Mm Squared Unicode Character
Unicode Version 17.0
㎟
U+339F "㎟" Square Mm Squared is a precomposed CJK compatibility ideograph representing the unit of area known as a square millimeter, which is equal to the area of a square with sides one millimeter in length. It appears as a single glyph combining the letters "m" and a superscript "2" to indicate squaring, and it is part of the CJK Compatibility block in Unicode, designed for use in East Asian text environments where such compact notation is standard for technical measurements in fields like engineering and printing. This character allows for efficient display of the unit without requiring separate formatting of superscripts, though its use is primarily legacy and can be replaced by the explicit sequence "mm²" in modern systems.
General Properties
| Code Point | U+339F |
| Version Added | 1.1 |
| Name | Square Mm Squared |
| Unicode 1.0 Name | Squared Mm Squared |
| Block | CJK Compatibility |
| General Category | Other Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Square |
| Decomposition Mapping | "m" U+006D Latin Small Letter M "m" U+006D Latin Small Letter M "²" U+00B2 Superscript Two |
Encodings
| HTML Decimal Encoding | ㎟ |
| HTML Hex Encoding | ㎟ |
| UTF-8 Encoding | 0xE3 0x8E 0x9F |
| UTF-16 Encoding | 0x339F |
| UTF-32 Encoding | 0x0000339F |
| C/C++/Java Escape | \u339f |