Letterlike Symbols | HTML Entity & Character Reference

Entities Letterlike Symbols

Letterlike symbols are Unicode characters that resemble letters but are used as distinct symbols in mathematics, science, measurements, legal notation, and other specialized contexts.

Many commonly used letterlike symbols have named HTML character references. They can also be represented with decimal or hexadecimal numeric character references or entered directly in a UTF-8 HTML document.

Common Letterlike Symbols

Common letterlike symbols include characters used for copyright, trademarks, service marks, prescriptions, and other familiar notation.

Character	Named	Decimal	Hexadecimal	Description
©	`©`	`©`	`©`	Copyright sign
®	`®`	`®`	`®`	Registered sign
℗	`&copysr;`	`℗`	`℗`	Sound recording copyright
™	`™`	`™`	`™`	Trade mark sign
℠	—	`℠`	`℠`	Service mark
℞	`&rx;`	`℞`	`℞`	Prescription take
℅	`&incare;`	`℅`	`℅`	Care of
℆	—	`℆`	`℆`	Cada una

Mathematical Letterlike Symbols

Mathematical notation uses several letterlike symbols as constants, number sets, transforms, and other specialized mathematical identifiers.

Character	Named	Decimal	Hexadecimal	Description
ℂ	`&Copf;`	`ℂ`	`ℂ`	Double-struck capital C
ℍ	`&Hopf;`	`ℍ`	`ℍ`	Double-struck capital H
ℕ	`&Nopf;`	`ℕ`	`ℕ`	Double-struck capital N
ℙ	`&Popf;`	`ℙ`	`ℙ`	Double-struck capital P
ℚ	`&Qopf;`	`ℚ`	`ℚ`	Double-struck capital Q
ℝ	`&Ropf;`	`ℝ`	`ℝ`	Double-struck capital R
ℤ	`&Zopf;`	`ℤ`	`ℤ`	Double-struck capital Z
℘	`&weierp;`	`℘`	`℘`	Script capital P
ℑ	`&image;`	`ℑ`	`ℑ`	Black-letter capital I
ℜ	`&real;`	`ℜ`	`ℜ`	Black-letter capital R

Scientific & Measurement Symbols

Some letterlike characters are used in science and measurement to represent units, constants, and specialized notation.

Character	Named	Decimal	Hexadecimal	Description
℃	—	`℃`	`℃`	Degree Celsius
℉	—	`℉`	`℉`	Degree Fahrenheit
K	—	`K`	`K`	Kelvin sign
Å	`&angst;`	`Å`	`Å`	Angstrom sign
℧	`&mho;`	`℧`	`℧`	Inverted ohm sign
Ω	`&ohm;`	`Ω`	`Ω`	Ohm sign
ℓ	`&ell;`	`ℓ`	`ℓ`	Script small L

Additional Letterlike Symbols

The Letterlike Symbols Unicode block contains additional characters used in mathematics, historical notation, typography, and specialized technical contexts.

Character	Named	Decimal	Hexadecimal	Description
℀	—	`℀`	`℀`	Account of
℁	—	`℁`	`℁`	Addressed to the subject
℄	—	`℄`	`℄`	Centre line symbol
℈	—	`℈`	`℈`	Scruple
℔	—	`℔`	`℔`	L B bar symbol
№	`&numero;`	`№`	`№`	Numero sign
℥	`&ounce;`	`℥`	`℥`	Ounce sign
ℨ	`&zeetrf;`	`ℨ`	`ℨ`	Black-letter capital Z
ℬ	`&Bscr;`	`ℬ`	`ℬ`	Script capital B
ℰ	`&Escr;`	`ℰ`	`ℰ`	Script capital E
ℱ	`&Fscr;`	`ℱ`	`ℱ`	Script capital F
ℳ	`&Mscr;`	`ℳ`	`ℳ`	Script capital M

Using Letterlike Symbols in HTML

Letterlike symbols can be entered directly in UTF-8 HTML or written with named, decimal, or hexadecimal character references. Use these characters when the symbol itself has a specific meaning rather than simply to create decorative letter styling.

<p>Copyright &copy; 2026</p>
<p>Trademark &trade;</p>
<p>Real numbers: &Ropf;</p>
<p>Natural numbers: &Nopf;</p>
<p>Temperature: 25&#8451;</p>

Browser Result

Trademark ™

Real numbers: ℝ

Natural numbers: ℕ

Temperature: 25℃