Understanding Keycap Sizes: A Guide to Keycap Profiles

The keyboard is an essential tool for computer users, and keycaps are one of the most important component parts of keyboards. Keycaps come in different sizes and profiles, making them an important factor to consider when choosing a keyboard that suits individual needs.

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Understanding the various keycap sizes and profiles can help users make informed decisions when purchasing or upgrading their keyboard. This article will provide a comprehensive guide to keycap sizes and profiles.

We will explain the different types of keycap profiles available in the market today, including OEM profile, Cherry profile, DSA profile, SA profile, and XDA profile. Additionally, we will explore how each keycap size affects typing comfortability and functionality.

By providing this information about keycap sizes and profiles, readers will be able to make informed choices when selecting a keyboard that best suits their needs.

Oem Profile

The OEM profile is one of the most popular keycap profiles in the market. It features a cylindrical shape that is slightly taller than a flat profile, providing a comfortable typing experience for many users.

The keycaps are sculpted in such a way that the tops of the keys are curved, while the sides are straight. This design allows for easy identification of each key when typing without looking at the keyboard.

One of the main advantages of using OEM keycaps is its compatibility with most keyboards. Since it has been around for a long time, many manufacturers have adopted this profile as their standard.

Moreover, OEM keycaps provide a good balance between comfort and durability, making them ideal for day-to-day use. While they may not be as flashy or unique as other profiles, they remain a reliable option for those who prioritize functionality over aesthetics.

Cherry Profile

  1. Cherry Profile Dimensions refer to the measurements of a keycap profile, such as the height, size and angle of the keycaps.
  2. Cherry Profile Variants are different shapes of a Cherry Profile keycap, such as the Cherry D, Cherry G, and Cherry M profiles.
  3. Cherry Profile Compatibility refers to which switches and keyboards are compatible with the different Cherry Profile Variants.

Cherry Profile Dimensions

An important consideration when selecting keycaps is the profile dimensions. The Cherry Profile, developed by Cherry Corporation, is a popular option among keyboard enthusiasts. This profile features a slightly curved surface with a higher incline towards the back of the keycap.

The height of each row varies, with the first row being the shortest and the fourth row being the tallest. Specifically, the first row measures 0.5 inches (12.9mm), second row measures 0.57 inches (14.5mm), third row measures 0.64 inches (16.3mm), and fourth row measures 0.76 inches (19.3mm).

These measurements are crucial in ensuring compatibility between keycaps and switches, as well as achieving a comfortable typing experience for users based on their preferences for typing angle and hand posture.

Cherry Profile Variants

In addition to the standard Cherry Profile, there are also variants that cater to different preferences and uses.

One such variant is the Cherry OEM profile, which has a flatter surface and lower incline compared to the standard profile. This makes it suitable for users who prefer a more neutral typing angle or those who use keyboards for gaming purposes.

Another variant is the Cherry DCS profile, which features a cylindrical shape with uniform height across all rows. This profile is often used in vintage keyboards and offers a unique aesthetic appeal.

These variations in Cherry Profile dimensions provide users with more options to customize their keyboard according to their needs and preferences.

Cherry Profile Compatibility

Another important aspect to consider when choosing a Cherry Profile is its compatibility with different keycap sets and switches.

While Cherry MX switches are the most commonly used with Cherry Profile keycaps, other switch types such as Gateron and Kailh can also be compatible.

However, it is important to note that some keycap sets may only fit certain profiles or switch types due to variations in stem size and shape.

Additionally, some keyboard layouts may require specific profiles for proper fit and functionality.

Therefore, it is crucial for users to research and ensure compatibility before purchasing a Cherry Profile keycap set or switch type.

Dsa Profile

The DSA (Deep Sculptured Architecture) Profile is a popular keycap profile known for its uniformity and versatility. It was designed by Signature Plastics to be compatible with all types of keyboards, including ortholinear and ergonomic layouts.

The profile features a flat top and uniform height across all rows, making it easy to switch between keys without any adjustment to finger placement. Additionally, the low-profile design makes it ideal for those who prefer a more compact keyboard layout.

One of the main advantages of the DSA profile is its versatility. It can be used in various applications such as gaming, typing, or programming due to its tactile feedback and consistent height. Moreover, it offers a wide range of customization options since it is compatible with different color combinations and designs.

The combination of these features makes the DSA profile an excellent choice for people who want a versatile and customizable keyboard experience.

In summary, the DSA Profile is an excellent option for those who prioritize uniformity and versatility in their keyboard layout. With its flat top design, consistent height across all rows, low-profile build, and wide range of customization options, it offers a satisfying tactile experience that can cater to different applications such as gaming or programming.

Sa Profile

Like a towering skyscraper, the DSA profile offers a sleek and modern design that stands tall among its competitors. However, for those who prefer a more traditional aesthetic, the SA profile may be the better choice.

The SA profile features a higher profile than the DSA, with a curved top that resembles a gently sloping hill. This design offers greater comfort for those who prefer to type using their fingertips rather than their entire finger. The keycaps are also sculpted in a way that conforms to the natural curves of your fingers, making it easier to find and press each key with precision. To better understand the differences between these two profiles, refer to the table below:


Overall, while both profiles offer unique advantages depending on personal preferences, it is important to consider factors such as typing style and comfort when choosing which one is right for you.

Xda Profile

The XDA profile is a keycap design that is relatively new to the market. It was first introduced in 2016 by a Chinese manufacturer called Godspeed SA.

The profile features uniform height and sculpting across all keys, which means that each key has the same height and shape. This gives the keyboard a clean, modern look that is popular with many gamers and typing enthusiasts.

The XDA profile is compatible with Cherry MX switches and other similar switch types. The keycaps are made from high-quality materials such as PBT (polybutylene terephthalate) plastic or ABS (acrylonitrile butadiene styrene) plastic, which makes them durable and resistant to wear and tear.

The XDA profile is also known for its excellent sound quality, which enhances the typing experience by providing a satisfying sound when each key is pressed.

Overall, the XDA profile is an excellent choice for those who are looking for a modern-looking keyboard with great sound quality and durability.


Keycaps are an essential component of a keyboard that can affect the user’s typing experience. Understanding the different keycap sizes and profiles can help users choose the right keyboard for their needs.

This article has provided a guide to five common keycap profiles, including OEM, Cherry, DSA, SA, and XDA profiles.

The OEM profile is a widely used keycap profile with a cylindrical shape that provides good typing feedback. The Cherry profile is similar to the OEM profile but has a lower height and shorter keys.

The DSA profile is flat and uniform in height, making it ideal for touch typing. The SA profile is tall and curved, providing a comfortable typing experience but may take some time to get used to. Finally, the XDA profile is similar to the DSA profile but with a wider surface area.

In conclusion, choosing the right keycap size and profile can make or break your typing experience. Each keycap profile has its advantages and disadvantages depending on your preferences and needs.

Whether you prefer a low-profile or high-profile keyboard, there is a keycap size and profile that will suit your style of typing. Take your time when selecting your next keyboard to ensure you get one that meets all your requirements for maximum comfort and efficiency while typing.