When shopping for a new keyboard, you might come across two major layouts: ANSI (American National Standards Institute) and ISO (International Organization for Standardization, commonly used in Europe and the UK). While they might look similar at first glance, these layouts have crucial differences that can affect typing comfort, key availability, and overall user experience.
NOTE: the header pic is from an AI, that’s why the keys are all wrong :)
Physical Layout Differences
The most noticeable variations between ANSI and ISO keyboards involve the shape and positioning of several keys. Here’s a breakdown:
- Enter Key:
- ANSI: A wide, horizontal Enter key.
- ISO: A taller, upside-down L-shaped Enter key.
- Left Shift Key:
- ANSI: A longer Left Shift key.
- ISO: A shorter Left Shift key, with an extra key (often “|”) next to it.
- Backslash Key (\ |):
- ANSI: Positioned above the Enter key.
- ISO: Placed to the left of the Enter key.
- AltGr Key:
- ANSI: No AltGr key (instead, it has a second standard Alt key).
- ISO: Features an AltGr (Alternate Graphics) key, allowing access to additional characters.
- Number of Keys:
- ANSI: 104 keys (full-size layout) or 87 keys (tenkeyless layout).
- ISO: 105 keys (full-size) or 88 keys (tenkeyless) due to the additional key next to Left Shift.
Typing Experience and Ergonomics
The differences in layout affect typing feel and comfort, particularly for users who have developed muscle memory with one standard over the other:
- ANSI keyboards tend to be more comfortable for touch typists due to the wider Left Shift key, which can be easier to reach.
- ISO layouts are better suited for European languages, as the AltGr key allows for easy access to accented characters and special symbols.
- Some users prefer the L-shaped Enter key on ISO keyboards for visual and tactile reasons, while others find the larger ANSI Enter key more ergonomic.
Availability and Compatibility
Your choice of ANSI vs. ISO can also depend on where you live and the type of keyboard you’re looking for:
- ANSI is dominant in the U.S. and commonly found in gaming and mechanical keyboards worldwide. Most custom keycap sets are made for ANSI layouts.
- ISO is standard in the UK and most of Europe. If you need a keyboard with specific regional characters, an ISO layout may be the better option.
- Keycap compatibility is better for ANSI layouts, as most aftermarket keycap sets are designed for ANSI, with fewer options available for ISO users.
Which One Should You Choose?
The decision between ANSI and ISO largely depends on your personal preference and location:
- If you’re used to an ANSI layout and prefer a wider Left Shift key, ANSI is the way to go.
- If you frequently type in a language that requires AltGr characters, an ISO layout might be more practical.
- If you plan on customizing your keyboard with aftermarket keycaps, ANSI provides more choices.
FAQs about ANSI vs ISO Keybaords
What is the main difference between ANSI and ISO keyboards?
The main differences are in the Enter key shape, Left Shift key size, and the presence of an Alt Gr key in ISO keyboards. ANSI keyboards have a rectangular Enter key, larger Left Shift keys, and no Alt Gr key, while ISO keyboards have an L-shaped Enter key, smaller Left Shift keys, and an Alt Gr key for diacritics.
Which regions typically use ANSI and ISO keyboards?
ANSI keyboards are commonly used in the United States, Canada, Australia, and many Asian countries. ISO keyboards are more prevalent in European countries and South America.
How many keys do ANSI and ISO keyboards typically have?
ANSI keyboards usually have 101-104 keys, while ISO keyboards have 102-105 keys. The extra key on ISO keyboards is often used for special characters.
What is the purpose of the Alt Gr key on ISO keyboards?
The Alt Gr key is used to access characters with diacritics, such as accents and umlauts, which are common in many European languages.
Which keyboard layout is more ergonomic?
ANSI keyboards are generally considered more ergonomic because the keys are closer together, reducing finger movement. However, the ISO layout’s L-shaped Enter key can be more intuitive for some users.
Are ANSI keyboards better for gaming?
Many gamers prefer ANSI keyboards due to the larger Left Shift key, which can improve gaming performance. However, personal preference plays a significant role.
How does the placement of the Backslash key differ between ANSI and ISO keyboards?
On ANSI keyboards, the Backslash key is located above the Enter key, while on ISO keyboards, it is positioned near the Left Shift key.
Are ANSI or ISO keyboards more expensive?
ISO keyboards tend to be more expensive than ANSI keyboards due to lower demand and availability.
Is it easy to find keycaps for ISO keyboards?
Keycaps for ISO keyboards are less common than those for ANSI keyboards, although some manufacturers specialize in ISO keycap sets.
Can I switch from an ANSI to an ISO keyboard layout easily?
Switching from an ANSI to an ISO layout can require some adjustment due to differences in key placement and size. It may take time to get accustomed to the new layout.
Final Thoughts
Both ANSI and ISO keyboard layouts have their advantages and disadvantages. While ANSI is more common globally—especially in gaming and enthusiast circles—ISO remains essential for European users who need extra characters and prefer a different Enter key design. Understanding these differences can help you make an informed decision when choosing your next keyboard.
At TechImage, we stock both ANSI and ISO keyboards, ensuring you find the perfect fit for your needs. Browse our selection today and upgrade your typing experience!