Hidden Option Key Symbols on Mac: The Full Cheat Sheet

Every key on your Mac types four things: the letter, its capital, and two hidden layers reached with Option and Option+Shift. That's where the em dash lives, and the degree sign, © and ™, € and ¥, π and ∞. Here's the cheat sheet for the US layout — plus the built-in viewer that reveals the layers on any layout.

The symbols worth memorizing

Out of a hundred-plus hidden characters, these earn permanent finger-memory — each one saves a trip to a symbols menu several times a week:

• Option+Shift+Hyphen → — em dash, and Option+Hyphen → – en dash
• Option+8 → • bullet
• Option+Shift+8 → ° degree
• Option+G → ©, Option+R → ®, Option+2 → ™
• Option+Shift+2 → €, Option+Y → ¥, Option+3 → £
• Option+; → … real ellipsis (needed when naming menu items for custom shortcuts)

The full Option layer (US layout)

Number row: ¡ ™ £ ¢ ∞ § ¶ • ª º for Option+1 through 0, with – and ≠ on hyphen and equals. Letters:

• Top row: œ ∑ ® † ¥ ø π (Q W R T Y O P — E, U, I are dead keys, below)
• Home row: å ß ∂ ƒ © ˙ ∆ ˚ ¬ … æ (A S D F G H J K L ; ')
• Bottom row: Ω ≈ ç √ ∫ µ ≤ ≥ ÷ (Z X C V B M , . /)

The Option+Shift layer holds another full set — highlights include € (Shift+2), ° (Shift+8), the Apple logo (Shift+K), ± (Shift+equals), ¿ (Shift+/), and curly-quote and dagger variants across the top row („ ‰ Á ˇ ‡ and friends).

Five keys that seem broken (they're dead keys)

Pressing Option+E, Option+U, Option+I, Option+N, or Option+` types nothing at first — these are dead keys that wait for a letter and then accent it: Option+E then a gives á; Option+U then o gives ö. To type the bare mark itself, press the dead key and then the space bar. They're not bugs; they're the accent system.

See your own keyboard's layers

Every layout arranges these differently — British, German, and AZERTY keyboards each hide their treasures elsewhere. To explore yours: enable the input menu (System Settings → Keyboard → Input Sources → Edit… → Show Input menu in menu bar), then choose Show Keyboard Viewer from the menu bar. Hold Option and the on-screen keys repaint with the hidden layer; add Shift for the fourth layer; dead keys glow orange. Thirty seconds of holding modifiers over the viewer teaches you more than any table.

And for the character you need once a year — an interrobang, a section sign in a different weight — skip the hunt: Ctrl+Cmd+Space opens the Character Viewer, searchable by name, with everything Unicode offers.

Worth knowing when you travel between layouts: the treasures relocate. On British keyboards Option+3 types # (Shift+3 being £), Option+2 types € rather than ™, and several math symbols shuffle. The layer system is universal — every Mac layout hides two extra characters under each key — but the map is layout-specific, which is exactly why the Keyboard Viewer habit pays off wherever you type.

Related: symbols with their own guides

A few characters deserve deeper treatment — the em dash and smart-dash substitution has its own guide, as do the degree sign, euro, and check mark. If you type one of them daily, a text replacement (a short trigger like ;deg that expands automatically) beats even the Option combo.