Mathematical Symbols and Operators in Unicode

Mathematical Symbols in Unicode

Unicode provides extensive coverage of mathematical notation across multiple blocks, totaling thousands of symbols for operators, relations, arrows, and letterlike forms.

Key Mathematical Blocks

Block	Range	Examples
Mathematical Operators	U+2200–U+22FF	∀ ∃ ∈ ≠ ≤ ∞
Supplemental Math Operators	U+2A00–U+2AFF	Advanced operators
Miscellaneous Math Symbols-A	U+27C0–U+27EF	Brackets, angles
Miscellaneous Math Symbols-B	U+2980–U+29FF	Additional symbols
Arrows	U+2190–U+21FF	← ↑ → ↓ ⇒ ⇔
Letterlike Symbols	U+2100–U+214F	ℕ ℤ ℝ ℂ ℏ

Common Mathematical Symbols

Symbol	Code Point	UTF-8 Bytes	Name
×	U+00D7	C3 97	MULTIPLICATION SIGN
÷	U+00F7	C3 B7	DIVISION SIGN
≠	U+2260	E2 89 A0	NOT EQUAL TO
≤	U+2264	E2 89 A4	LESS-THAN OR EQUAL TO
≥	U+2265	E2 89 A5	GREATER-THAN OR EQUAL TO
∞	U+221E	E2 88 9E	INFINITY
∑	U+2211	E2 88 91	N-ARY SUMMATION
∏	U+220F	E2 88 8F	N-ARY PRODUCT
∫	U+222B	E2 88 AB	INTEGRAL
≈	U+2248	E2 89 88	ALMOST EQUAL TO
∈	U+2208	E2 88 88	ELEMENT OF
∀	U+2200	E2 88 80	FOR ALL

Look-alike Characters

Several mathematical symbols look similar to ASCII characters but are different code points:

• MINUS SIGN (U+2212) vs. HYPHEN-MINUS (U+002D)
• MULTIPLICATION SIGN (U+00D7) vs. lowercase x (U+0078)
• DIVISION SIGN (U+00F7) vs. none in ASCII
• NOT EQUAL TO (U+2260) vs. != (two ASCII chars)

Mathematical Alphanumeric Symbols

The block U+1D400–U+1D7FF provides styled mathematical letters: bold (𝐀), italic (𝐴), script (𝒜), fraktur (𝔄), double-struck (𝔸), and their combinations. These are supplementary-plane characters requiring 4 bytes in UTF-8.

Practical Usage

Mathematical symbols are commonly used in academic documents, scientific notation, and programming documentation. The Unicode Inspector helps verify that the correct symbol is being used (e.g., the real minus sign U+2212 rather than the ASCII hyphen U+002D) and reveals the encoding details for each symbol.