Greek Capital Letter Delta

Greek Capital Letter Delta is a Greek-alphabet character used both for writing the modern Greek language and, more commonly online, as mathematical or scientific notation — for constants, variables, angles, and units across physics, engineering, and statistics.

Unicode block: Greek and Coptic (U+0370–U+03FF). This block encodes the modern Greek alphabet alongside Coptic letters. Greek letters have been borrowed into mathematics, physics, and engineering notation for centuries, which is why you'll see them constantly outside actual Greek-language text.

At Unicode code point U+0394 (decimal 916), Greek Capital Letter Delta is the 29th of 135 characters cataloged in this category on How To Type Any Symbol. In terms of typing methods, it has a documented Mac keyboard shortcut, though no legacy Windows Alt code (Windows Alt codes only cover the original 0–255 codepage range) — Windows users generally rely on copy-paste for it. Regardless of platform, clicking the copy button above places the exact character on your clipboard, ready to paste into any application that accepts Unicode text.

💡 Good to know: In science and math writing, this letter often has a specific conventional meaning (like π for pi or Σ for summation) — check your field's notation conventions before reusing it for something else.