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Description & Usage
The Greek Capital Sigma Symbol is Σ. Its Unicode code point is U+03A3, HTML entity is Σ, CSS escape is \\3A3, and JavaScript escape is \u03A3.
Greek capital sigma (Σ) is a Greek Unicode letter used in formulas, variables, science writing, and Greek-letter references within sigma symbol in the uppercase group.
Practical use
Use Greek capital sigma only when that Greek letter is the intended variable, constant, or reference; keep case and lookalike Latin letters distinct.
Compatibility
Greek capital sigma is a Unicode character, but exact shape, weight, spacing, and fallback behavior depend on the font and platform.
Use the primary copy button for the actual character. Use the implementation codes when you need to place the same symbol in HTML, CSS, JavaScript, or technical documentation.
Related Symbols
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Formula variables
Sigma Symbol are useful in physics, math, engineering, economics, and statistics notes where Greek letters carry established meanings.
Uppercase vs lowercase
Check case carefully: uppercase and lowercase Greek letters often represent different constants, operators, or variables. For sigma symbol, keep the surrounding label and detail notes aligned with the intended use.
Plain-text notation
Unicode Greek letters work well in notes, slides, and chat, but LaTeX or equation editors are better for complex formulas. For sigma symbol, keep the surrounding label and detail notes aligned with the intended use.
Related categories
Move from sigma symbol into nearby categories when you need related Unicode signs, alternate notation, or a clearer symbol family.
Related categories in this set
FAQ
How do I copy the Greek Capital Sigma?
Use the copy button on SymbolCopy to copy Greek Capital Sigma to your clipboard, then paste it into your document, app, website, or social post.
What is the Unicode for Greek Capital Sigma?
The Unicode value for Greek Capital Sigma is U+03A3.