What ㋎ means
It means eV, the electronvolt, an energy unit. One electronvolt is the energy an electron gains across a voltage difference of one volt. The unit was introduced as the “equivalent volt” in 1912; its name later became “electronvolt.”
The square fits Latin eV into one character cell alongside East Asian text.
A font can change the drawn square or show a missing-character box. A text-normalization process called NFKC converts ㋎ to plain eV, so exact-symbol matching may fail.
Don't confuse it with
1EV
EV vs eV is a case distinction: all-capital `EV` commonly means electric vehicle; `eV` is an energy unit.
Questions people ask
1Why does ㋎ 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 ㋎
Windows (Word)
Alt+XType 32CE, then Alt+X to get ㋎.
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 ev”.
Linux
Ctrl+Shift+UType 32ce, then Enter or Space.
HTML
㋎CSS
\32CECodes and encoding1 code points
HTML decimal
㋎
HTML hex
㋎
CSS content
content: "\32CE";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E3%8B%8E
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.