⌀ diameter sign

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Character info

Character⌀
UnicodeU+2300
Korean name지름 기호
Official namediameter sign
CategoryOther symbol
HTML code⌀
JavaScript"\u{2300}"

Names and categories come from official Unicode 18.0.0 data. Korean names are ours. Unicode UnicodeData.txt 18.0.0 (Unicode License v3)

Type it yourself

More on typing by system in the keyboard guide.

Look-alikes

∅ (empty set), Ø ø (Nordic letter o with stroke) and ⌀ (diameter sign) look similar but are different characters.

U+2205 empty set, U+00D8 latin capital letter o with stroke, U+00F8 latin small letter o with stroke, U+2300 diameter sign