Pi symbol

Lowercase pi, π, is the Greek letter used for the circle constant, approximately 3.14159. Use it in plain text or an equation.

Unicode: U+03C0
HTML: π

Circle circumference, with radius rC = 2πr

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π is lowercase pi. Π is the capital Greek letter; ∏ is the mathematical product operator. Similar shapes do not mean identical characters.

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Character details

U+03C0 · GREEK SMALL LETTER PI

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