Keyboards sold in the UK and the US look nearly identical at a glance — both use QWERTY, both have the same letter arrangement. But switch between them and the differences show up immediately: symbols in the wrong place, an Enter key that looks different, and shortcuts that don’t work as expected. This guide covers what separates the two layouts, how they originated, and how to switch between them on Windows and macOS.
What Is the US Keyboard Layout?
The US keyboard follows the ANSI (American National Standards Institute) standard. It is the most common default in international custom keyboard kits, gaming keyboards, and aftermarket keycap sets.
Key characteristics of the US layout:
- Rectangular Enter key — wide and single-row, fitting neatly into one row
- Long left Shift key — no extra keys between Shift and Z
- Both Alt keys function identically — no Alt Gr
- @ on Shift + 2, ” on Shift + ‘
- # on Shift + 3, ~ next to the 1 key
- Backslash \ above the Enter key
The US layout’s simplicity and global dominance make it the default for most gaming keyboard builds, keycap sets, and custom keyboard projects worldwide.
What Is the UK Keyboard Layout?
The UK keyboard commonly uses the ISO physical layout, with a UK English key mapping for symbols such as £, @, and “. Used primarily in the United Kingdom and Ireland, it accommodates British English typing conventions and regional symbols not present on the US layout.
Key characteristics of the UK layout:
- L-shaped Enter key — taller, spanning two rows
- Shorter left Shift key — an extra key sits between Shift and Z
- Right Alt may function as Alt Gr — giving access to third-level characters such as € and other regional symbols
- @ on Shift + ‘, ” on Shift + 2
- # has its own dedicated key next to the Enter key
- £ on Shift + 3 — a dedicated pound sterling key not found on US keyboards
- Backslash \ next to the left Shift key
The UK layout has one more physical key than its US counterpart — 105 keys on a full-size board vs 104 on the US version.
UK vs US Keyboard: Key Differences
Enter Key
The most visually obvious difference. The US Enter key is a wide horizontal rectangle sitting in a single row. The UK Enter key is tall and L-shaped, spanning two rows. This changes the position of several surrounding keys and is the first thing most people notice when switching between the two layouts.
Left Shift Key
The UK layout includes an extra key between the left Shift and Z — typically the backslash or a regional character key. This shortens the left Shift key noticeably compared to the US version. For touch typists who rely on the Shift key edge as a positional reference, this difference takes time to adjust to.
Symbol Placement
This is where the two layouts diverge most practically. The same physical keys produce different characters depending on which layout is active:
| Symbol | US Keyboard | UK Keyboard |
| @ | Shift + 2 | Shift + ‘ |
| “ | Shift + ‘ | Shift + 2 |
| # | Shift + 3 | Dedicated key (next to Enter) |
| £ | No dedicated key | Shift + 3 |
| ~ | Next to 1 key | Not in the same position |
| ¬ | Not standard | Next to 1 key |
Backslash Key
On many UK ISO keyboards, the backslash key appears beside the shorter left Shift, while the #/~ key sits near the Enter key. On the US layout, the backslash \ sits above the Enter key. For developers and coders who use backslashes frequently, this positional difference creates consistent muscle memory problems when switching between the two.
Right Alt Key
The US layout has two identical Alt keys — left and right function the same way. The UK layout replaces the right Alt with Alt Gr (Alternate Graphic), which may unlock a third layer of characters: € (Alt Gr + 4) and other regional symbols. This makes the UK layout more flexible for European character input, but adds complexity for users unfamiliar with it.
UK vs US at a Glance
| Feature | US Keyboard (ANSI) | UK Keyboard (ISO) |
| Standard | ANSI | ISO |
| Total keys (full-size) | 104 | 105 |
| Enter key | Wide, rectangular | Tall, L-shaped |
| Left Shift | Long | Shorter (extra key beside it) |
| Right Alt | Same as left Alt | Alt Gr |
| @ symbol | Shift + 2 | Shift + ‘ |
| ” symbol | Shift + ‘ | Shift + 2 |
| # symbol | Shift + 3 | Dedicated key |
| £ symbol | No dedicated key | Shift + 3 |
| Backslash \ | Above Enter | Next to the left Shift |
How to Switch Between UK and US Keyboard Layout
On Windows 10 and 11
- Press Win + I to open Settings
- Go to Time & Language → Language & Region
- Under Preferred Languages, select your current language and click Options
- Under Keyboards, click Add a keyboard
- Select the layout you want to add (United Kingdom or United States)
- Use Win + Spacebar to toggle between active layouts at any time
Note: changing the software layout doesn’t relabel the physical keys — you’ll need to learn or label the key positions yourself if switching regularly.
On macOS
- Click the Apple menu → System Settings
- Go to Keyboard → Input Sources
- Click the + button
- Search for English and select either British or US from the list
- Click Add
- Use the language switcher in the menu bar to toggle between layouts
Which Layout Should You Choose?
For most users outside the UK and Ireland — and for anyone building a mechanical gaming keyboard or buying aftermarket keycaps — the US ANSI layout is the practical default. Keycap sets, keyboard cases, and PCBs are overwhelmingly designed around ANSI. ISO-compatible options exist, but the selection is narrower.
For UK and Ireland-based users who type the £ symbol regularly and are already accustomed to the ISO Enter key and Alt Gr, the UK layout is the more natural choice. Switching to ANSI requires relearning symbol positions that are deeply ingrained.
For programmers and developers, the US layout has a practical edge — symbols like @, #, and \ that appear constantly in code are more conveniently placed. This is one reason US ANSI has become the default in most technical and international contexts. Understanding your keyboard’s full layout is worth taking the time to do properly — the keyboard size and layout guide covers the broader picture of how layout choices affect compatibility and daily use.
Conclusion
The US and UK keyboard layouts share the same QWERTY letter arrangement but diverge on the Enter key shape, the Shift key length, symbol placement, and the right Alt key. Neither is objectively better — the right choice depends on where you use the keyboard, which symbols you type daily, and what keycap ecosystem you want access to. For most global and custom keyboard contexts, ANSI is the default. For UK-specific use, ISO makes day-to-day typing more natural.
FAQ
Why is the Enter key different on UK and US keyboards?
The UK keyboard follows the ISO standard, which uses an L-shaped Enter key. The US keyboard follows the ANSI standard, which uses a wide rectangular keyboard. Both are functional choices stemming from different regional standardisation bodies.
Which layout is better for programming?
Most programmers prefer the US ANSI layout. Symbols like @, #, and ~ used constantly in code are more conveniently positioned on the US layout.
Do UK keycaps fit US keyboards?
ISO and ANSI keycap sets are not interchangeable. The L-shaped ISO Enter key won’t fit an ANSI board, and the shorter ISO left Shift won’t cover an ANSI Shift key. Always confirm which standard your keyboard uses before buying keycaps.
How do I type £ on a US keyboard?
On Windows, use Alt + 0163 on the numeric keypad. On macOS, use Option + 3. There’s no dedicated key on a US keyboard for the pound sterling symbol.
What is Alt Gr?
Alt Gr (Alternate Graphic) is the right Alt key on ISO keyboards. Holding it unlocks a third layer of characters — € symbols, accented letters, and regional characters — that aren’t accessible on US keyboards without keyboard shortcuts.
