Greek Capital Letter Delta Symbol

A symbol from the Math Symbols collection. Click the symbol or the button below to copy.

Symbol: Δ
Unicode: U+0394
HTML entity: Δ
Category: Math Symbols

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95 of 96 in the math symbols collection

About the greek capital letter delta symbol

The character is read as "delta," the fourth letter of the Greek alphabet. In modern Greek, it represents a voiced dental fricative sound, like the "th" in "this."

In mathematics and science, it is often used to denote change or difference in a quantity, such as Δx for a change in x. It also appears in engineering and physics to represent the Laplace operator or the discriminant in algebra. The uppercase form is distinct from the lowercase delta (δ) and is not used in Greek writing for the same phonetic value as its lowercase counterpart.

How to type Greek Capital Letter Delta

Native keyboard shortcuts for each operating system — derived from the codepoint, so the steps below are always accurate.

Windows

2 options

In Word / Outlook: type 0394 then press Alt + X.
Anywhere: press Win + . to open the emoji & symbol picker, then search.

macOS

2 options

Enable “Unicode Hex Input” in System Settings → Keyboard, then hold Option and type 0394.
Or: Control + Command + Space opens the Character Viewer — search by name.