# Vertical monitor on a Mac Source: https://ribbonformac.com/vertical-monitor-mac Updated: 2026-10-29 Turn the monitor on its side, then open System Settings → Displays, select that monitor and set Rotation to 90° or 270° (whichever makes the picture upright). Arrange it beside your main screen in the same pane. A portrait monitor is excellent for code, documents, PDFs, chat and long feeds; the trick is fitting more than one window on a screen that's tall and narrow. ## 1. Rotate the display 1. Physically rotate the monitor (it needs a stand that pivots, or a VESA arm). 2. System Settings → **Displays**, and click the monitor in the row at the top. 3. Set **Rotation** to **90°** or **270°**. Which one depends on which way you turned it; if the picture is upside down, pick the other. 4. Click **Confirm** when asked. The Rotation setting appears for external displays. MacBook built-in screens don't offer it. ## 2. Arrange it Still in Displays, click **Arrange**. The rotated monitor now appears as a tall rectangle; drag it to sit beside your main display, and line up the tops or middles the way they sit on your desk, so the pointer crosses where you expect. The [external monitor guide](https://ribbonformac.com/macbook-external-monitor-setup) covers arrangement and the main display in more detail. ## 3. Pick the right scaling A 27-inch 4K monitor in portrait is about 34 cm wide, so scaling matters. In Displays, choose a resolution option that keeps text comfortable at your distance. A 24-inch or 27-inch panel at 4K looks sharpest; see [best monitor resolution for a Mac](https://ribbonformac.com/best-monitor-resolution-for-mac). ## What works well in portrait - **Code:** far more lines on screen, and most code is narrower than a portrait screen is wide. - **Documents and PDFs:** a whole page at readable size. Great for reading papers and contracts. - **Chat, email and feeds:** Slack, mail, social feeds, logs, news tickers. - **Trading:** watchlists and Level 2 data. See [Mac setup for trading](https://ribbonformac.com/mac-setup-for-traders). What doesn't: video, wide spreadsheets, and design tools with side panels. ## Fitting more than one window A portrait screen is too narrow for side by side but has room for windows stacked top to bottom. - **macOS 15 and later:** Fn⌃↑ and Fn⌃↓ tile windows to the top and bottom halves; Fn⌃⇧↑ arranges the front two windows top and bottom at once. - **Rectangle** (free) adds more layouts, including thirds. ## Ribbon on a portrait monitor [Ribbon](https://ribbonformac.com/) gives each display its own strip, so the vertical monitor gets a strip of its own. On a narrow screen, the useful tools are: - **Full-width columns** (⌃⌥F): one window per column, and a sideways swipe or ⌃⌥← / → flips between them. - **Stacks:** put several windows in one column, one above the other, with ⌃⌥]. Chat on top, email below, for example. ⌃⌥⇧= / - makes one taller or shorter, and ⌃⌥0 evens them out. - **Tabbed columns** (⌃⌥⇧T) to keep several windows in one column, one at a time. - **Send a window over** from the main screen with ⌃⌥N. Your main, landscape screen keeps its own strip with wider columns. [Try the strip in the live demo](https://ribbonformac.com/#demo); [pricing](https://ribbonformac.com/#pricing) is $9.99 once. ## FAQ ### How do I rotate my monitor on a Mac? System Settings → Displays, select the external monitor, and set Rotation to 90° or 270°. ### Why is there no Rotation option? It appears only for external displays; built-in laptop screens can't be rotated. If an external monitor doesn't show it, try connecting it directly rather than through a dock or adapter. ### Is a vertical monitor good for programming? Yes. You see many more lines at once, and most code fits comfortably in a portrait screen's width. ## Keep reading - [MacBook + external monitor](https://ribbonformac.com/macbook-external-monitor-setup) — Arrangement, Spaces, moving windows between screens, clamshell mode and tiling. - [Two external monitors on a MacBook](https://ribbonformac.com/two-external-monitors-macbook) — Limits by chip, the M3 Air lid rule, DisplayLink, and arranging three screens. - [Best monitor resolution for Mac](https://ribbonformac.com/best-monitor-resolution-for-mac) — Why 1440p looks soft, how scaling works, which size and resolution pairs look sharp. - [PDF and notes side by side](https://ribbonformac.com/pdf-and-notes-side-by-side-mac) — PDF readers, side-by-side layouts, two PDFs at once, and getting highlights into notes. - [Mac setup for traders](https://ribbonformac.com/mac-setup-for-traders) — Platforms that run on macOS, monitor limits by chip, window layout and Windows-only software.