What is the HTML entity for Greek Capital Letter Sigma?

The HTML entity for Greek Capital Letter Sigma is Σ (decimal: Σ, hex: Σ).

What is the Unicode codepoint for Greek Capital Letter Sigma?

Greek Capital Letter Sigma has the Unicode codepoint U+03A3 (decimal: 931).

What is the UTF-8 encoding of Greek Capital Letter Sigma?

The UTF-8 encoding of Greek Capital Letter Sigma is CE A3.

How do I use Greek Capital Letter Sigma in JavaScript?

In JavaScript, use the escape sequence \u03A3 or paste the character directly in a string.

What is the CSS escape for Greek Capital Letter Sigma?

The CSS escape for Greek Capital Letter Sigma is \3A3. Use it in CSS content properties or selectors.

How do I write Greek Capital Letter Sigma in Python?

In Python, use the escape sequence \u03A3 inside a string literal.

What is the URL encoding for Greek Capital Letter Sigma?

The percent-encoded (URL encoded) form of Greek Capital Letter Sigma is %CE%A3.

What Unicode block does Greek Capital Letter Sigma belong to?

Greek Capital Letter Sigma belongs to the Greek and Coptic Unicode block.

Greek Capital Letter Sigma

U+03A3

BMP Unicode 1.1

Character Σ

Entity Σ

Decimal Σ

Hex Σ

Classification

Unicode properties assigned to this character by the Unicode Consortium. The codepoint is its unique numeric identifier. Category, block, and script determine how text systems render and process it.

Codepoint: U+03A3
Decimal: 931
Plane: BMP — Basic Multilingual Plane
Category: Uppercase Letter (Lu)
Block: Greek and Coptic
Script: Greek
Bidi class: L Left-to-Right
East Asian Width: A Ambiguous
Properties: Alphabetic ID Start ID Continue
Lowercase: σ U+03C3

Looks Like (Confusables)

Characters that are visually similar — relevant for security, font design, and homoglyph detection.

Ʃ U+01A9 compare →

Encodings & Escape Sequences

Every Unicode character can be represented in multiple ways depending on context. HTML entities let you embed it safely in web pages. UTF-8 bytes are what gets stored on disk and sent over the network. Escape sequences let you reference it in source code without pasting the raw glyph. All formats below refer to the same character — Greek Capital Letter Sigma.

Click the copy icon to copy any value.

Format	Value
HTML Named Entity	`Σ` Named HTML entity — works in all browsers.
HTML Decimal	`Σ` Decimal numeric character reference (&#decimal;).
HTML Hex	`Σ` Hexadecimal numeric character reference (&#xHex;).
UTF-8 Hex Bytes	`CE A3` UTF-8 encoding as hex byte values. Most common on the web.
UTF-16 Hex Bytes	`03 A3` Used internally by JavaScript, Java, and Windows.
UTF-32 Hex	`000003A3` Fixed-width: one codepoint = 4 bytes.
CSS Escape	`\3A3` Use in CSS content property: content: "\XXXX"
JavaScript Escape	`\u03A3` Use in JS strings: "\uXXXX" or template literals.
Python Escape	`\u03A3` Use in Python strings: "\uXXXX" or "\UXXXXXXXX".
URL Encoded	`%CE%A3` Percent-encoded for use in URLs.

Have a string containing this character? Decode it to see every codepoint. UnicodeDecoder →

Characters That Include This

These characters decompose to a sequence that includes Greek Capital Letter Sigma as a component. They are effectively precomposed versions or compounds built on this base character.

Ϲ U+03F9 𝚺 U+1D6BA 𝛴 U+1D6F4 𝜮 U+1D72E 𝝨 U+1D768 𝞢 U+1D7A2

Previous in block

Ρ Greek Capital Letter Rho

Next in block

Greek Capital Letter Tau Τ

More in Greek and Coptic

View all →

Ͱ U+0370 ͱ U+0371 Ͳ U+0372 ͳ U+0373 ʹ U+0374 ͵ U+0375 Ͷ U+0376 ͷ U+0377 ͺ U+037A ͻ U+037B ͼ U+037C ͽ U+037D ; U+037E Ϳ U+037F ΄ U+0384 ΅ U+0385 Ά U+0386 · U+0387 Έ U+0388 Ή U+0389 Ί U+038A Ό U+038C Ύ U+038E Ώ U+038F

More Greek Script Characters

View all →

Ͱ U+0370 ͱ U+0371 Ͳ U+0372 ͳ U+0373 ͵ U+0375 Ͷ U+0376 ͷ U+0377 ͺ U+037A ͻ U+037B ͼ U+037C ͽ U+037D Ϳ U+037F ΄ U+0384 Ά U+0386 Έ U+0388 Ή U+0389