Guide to Keycap Types: Materials, Profiles, and More

Categorizing different types of keycaps by materials is the most popular because it directly influences their durability, tactile feel, and customization options, allowing users to select keycaps that align with their preferences and needs for their mechanical keyboards. This division provides readers a clear understanding of how different materials impact the overall typing experience and long-term performance.

Types of Keycap Materials

Keycap material	Pros	Cons
ABS	Smooth surface Affordable Readily available Allows for vibrant printing Often found on stock keyboards	Prone to wear and shine over time Less durable than other materials
PBT	Durable Resistant to wear and shine Provides a more premium feel Textured surface for better grip, and longer lifespan	Limited color vibrancy Can be more expensive than ABS
POM	Smooth and durable Resists wear and oil buildup Offers a unique feel Often used for a premium typing experience.	Limited availability May not feature intricate designs
Resin	Highly customizable with intricate designs Often handcrafted Unique and artistic Can be translucent for backlighting effects	Can be expensive, limited availability May not be as durable as some other materials
Rubber	Provide excellent grip and tactile feedback Ideal for gaming and typing Durable and resistant to wear Reduce typing noise	Limited aesthetic options Not as common as other materials May not be compatible with all keycap profiles

ABS and PBT Keycaps 

When selecting keycaps, two of the most common materials you'll encounter are ABS (Acrylonitrile Butadiene Styrene) and PBT (Polybutylene Terephthalate).

So, what is the difference between ABS and PBT keycaps? Is ABS or PBT better? The answer depends on your priorities, each offers unique features, catering to different preferences and uses.

• ABS Keycaps: Cheapest, most common plastic, mass-produced from easily moldable plastic. They feel smooth to the touch and allow for vibrant, eye-catching designs. While they can shine over time, they’re lightweight and widely available.
• PBT Keycaps: Less common but usually have higher quality, resistant to wear, providing a longer lifespan compared to ABS keycaps. This can reduce the need for replacements and returns. Besides, PBT keycaps often have a textured surface that provides a comfortable and grippy typing experience, enhancing user satisfaction.

Criteria	ABS keycaps	PBT keycaps
Durability	Less durable Prone to wear and lose texture faster Shiny and greasy over time	Highly durable Resistant to wear and shine over time
Texture and Feel	Flexible, smoother, and lightweight texture Slightly glossy or shiny appearance Slicker feel	Brittle, heavier, and solid feel Rougher texture and more matte finish Retains texture even with heavy usage
Cost	More affordable	Slightly more expensive
Thickness	Typically thinner, around 1.5mm	Generally thicker, 1.5mm - 1.8mm
Legends	Laser-etched or pad-printed May wear off over time	Dye-sublimated or double-shot legends Highly resistant to wear
Typing Sound	Produces a higher-pitched sound	Produces a deeper, more muted sound
Heat Resistance	Low resistance May warp or develop shine from heat	Highly heat-resistant Retains its structure and appearance
Preferred Use	Best for budget builds or vibrant designs	Ideal for long-lasting, high-quality keyboards

For more details about these two kinds of keycaps materials: ABS vs PBT, check out more specifications and decide which one is better.

Resin 

Resin keycaps are artisan-crafted custom keycaps for mechanical keyboards, primarily made from epoxy resin. They are known for their artistic diversity, allowing artisans to create intricate designs with various colors, textures, and even translucent effects.

Each keycap is handmade and often showcases unique elements like embedded objects or glitter. Resin keycaps offer a visually striking and personalized touch to mechanical keyboards, making them popular among enthusiasts and collectors. 

However, they are typically produced in limited quantities and are compatible with specific keyboard layouts and switches.

Read more: What is resin art?

Rubber 

Rubber keycaps are made from silicone rubber or rubberized compounds, offering a soft, tactile feel that reduces typing noise and fatigue. They feature enhanced grip, resistance to dirt and moisture, and durability. 

While they may lack the aesthetic diversity of other keycap materials, rubber keycaps are ideal for those seeking a comfortable, quiet typing experience and are easy to maintain. They are compatible with specific mechanical keyboard switches and are often chosen for office or shared workspaces due to their subdued sound profile. A closer look into rubber keycaps can facilitate you with more specific details.

Other Keycap Materials

Apart from these aforementioned keycap materials, there are many other materials for custom keycaps which bring about great user experience.

• POM (polyoxymethylene): POM is a tough and durable engineering thermoplastic. It is often used for keycaps due to its resilience and resistance to wear, offering a satisfying tactile feel.
• PC (polycarbonate): Polycarbonate keycaps are known for their transparency and flexibility. They can be used for creating backlit keycap designs, but they are typically less durable than PBT or ABS keycaps.
• Clay: Clay keycaps are artisanal creations made by sculpting clay into various shapes and designs. They are typically decorative and not suitable for extensive typing.
• Metal: Metal keycaps, often made from aluminum or zinc alloy, are known for their premium look and feel. They are heavy, durable, and offer a unique typing experience but can be quite loud.
• Wood: Wooden keycaps provide a natural and aesthetically pleasing appearance. They are less common and may not be ideal for extensive typing due to potential wear and discomfort compared to other materials.

So let’s take a look through these best keycap materials to find out which one is the most suitable for yourself. 

Types of Keycap Profiles

Keycap profiles determine the overall shape and height of your keycaps, directly influencing how they feel under your fingers and how they look on your keyboard. Adjusting the profile and keycap mount is a simple yet impactful way to customize both the comfort and style of your keyboard.

There are two main categories of keycap profiles: Sculpted Profiles and Uniform Profiles. Each type has many different classifications of profiles.

Sculpted Profile

A sculpted keycap profile, also known as a contoured profile, is a type of keycap design that features keycaps with varying heights and shapes to match the natural curvature of the fingers and hands when typing. This profile is intended to provide a more ergonomic and comfortable typing experience compared to uniform or flat profiles.

Some common sculpted keycaps are:

• Cherry Profile: Cherry profile is one of the most well-known sculpted profiles. It features a gentle sculpting with a lower overall height compared to some other profiles. Many mechanical keyboard enthusiasts find it comfortable and easy to type on.
• SA Profile: SA profile is known for its distinctive spherical shape. It has a high profile with a pronounced curve, offering a retro aesthetic. SA keycaps provide a comfortable and tactile typing experience but may take some time to adapt to due to their height.
• OEM Profile: OEM profile keycaps typically have a slight scooped shape in the middle, which some users find comfortable for everyday typing tasks.
• MT3 Profile: MT3 is a relatively new sculpted profile that features a unique, highly sculpted shape. It aims to reduce finger movement and provide an ergonomic typing experience. MT3 keycaps have a retro-inspired look and are designed for comfort.
• KAT Profile: KAT profile is uniform in height but features a scooped top surface that provides a comfortable and ergonomic typing feel. It combines a flat profile with a slight concave shape for improved keycap recognition.
• MDA Profile: MDA is a uniform keycap profile that combines the features of DSA and SA profiles. It has a cylindrical top surface but with a slightly taller profile than DSA.
• DOM Profile: Designed by Dwarf Factory, DOM is high profile with a rounded top at SA R1 height, ideal for artisan and see-through keycaps. Its unique design enhances visual appeal without compromising functionality.
• Tai-Hao Cubic Profile: A taller version of OEM, Tai-Hao Cubic profile measures 14.88mm in height. It combines a familiar sculpted shape with increased height, offering a comfortable typing experience and improved ergonomics.

Uniform Profile

A uniform keycap profile, often referred to as a flat or non-sculpted profile, is a type of keycap design where all the keycaps on a keyboard have the same shape and height. In contrast to sculpted profiles like Cherry, SA, or DSA, which have varying keycap heights and contours to match the natural positions of fingers, uniform profiles maintain a consistent keycap height and shape across all rows and keys on the keyboard.

Some common uniform keycaps are:

• DSA Profile: DSA keycaps are uniform in height and have a flat, cylindrical top surface. They offer a consistent typing experience across all rows, making them suitable for those who prefer a flat profile.
• XDA Profile: XDA is another uniform keycap profile with a flat, flat top surface that provides a modern and minimalistic look while maintaining a comfortable typing feel.
• G20 Profile: A low-profile design at 7.6mm, G20 keycaps feature angled tops and uniform rows, offering a sleek appearance and a smooth typing experience for users seeking minimalist aesthetics.
• KAM Profile: A uniform adaptation of the KAT profile, KAM keycaps have the same height and shape across all rows, larger top surface areas, and tighter keycap gaps for improved typing accuracy.
• TEA Profile: Specifically crafted for Kailh Choc low-profile switches, TEA keycaps feature deep scoops and a symmetrical design, delivering ergonomic comfort and precise typing for low-profile setups.
• Apple Keyboard Profile: Known for its ultra-thin and uniform layout, this profile prioritizes a streamlined, flat design, providing a compact and minimalist feel suited for Apple’s modern keyboards.

This table will summarize some most significant features of some most common keycap profiles.

	Height	Shape
Cherry Profile	9.4mm, Medium	Cylindrical, sculpted
OEM Profile	11.9mm, Medium	Slightly curved, cylindrical, sculpted
SA Profile	16.5mm, Tall	Distinctive spherical, sculpted
XDA Profile	9.1mm, Medium	Flat, uniform
DSA Profile	7.6mm, Short	Flat, cylindrical, uniform
KAT Profile	13.5mm, Medium	Scooped, sculpted
MT3 Profile	16.5mm, Tall	Unique angles, concave top, sculpted
MDA Profile	11.7mm, Medium	Cylindrical top surface, sculpted
DOM Profile	13.5mm, Medium	Rounded tops, snow globes, sculpted
Tai-Hao Cubic Profile	14.88 mm, Tall	Slightly curved, cylindrical, sculpted
G20 Profile	7.6 mm, Low	Angled tops, uniform
KAM Profile	9.1mm, Medium	Spherical, conical edges, uniform
TEA Profile	3.8mm, Low	Flat, dual footprint, uniform
Apple Keyboard Profile	2.3mm, Low	Ultra-thin, uniform

Best Type of Keycap Profile for Gaming

For an optimal gaming experience, factors like speed, comfort, and precision are key. While keycap profiles can affect comfort, they have minimal impact on actual gaming performance. Instead, focus on your keyboard’s switches, as they play a more critical role in responsiveness. For more information, check out this guide on the best key switches for gaming.

If you’re looking for keycaps suited for gaming, the Cherry profile and Cherry low-profile keycap profile is a great choice. Its reduced height minimizes keypress travel distance, improving speed and responsiveness in fast-paced games. These profile also provide comfort during long sessions while maintaining a sleek, modern aesthetic, making them a popular pick for many gamers.

Best Type of Keycap Profile for Typing

For efficient typing, keycap profiles should offer comfort, ease of movement, and minimal finger strain. A good profile reduces finger stretching and supports consistent hand placement for long typing sessions. Familiarity with the profile also plays a key role, as muscle memory significantly impacts typing speed and accuracy.

Among the top choices, the Cherry profile stands out for its moderate height and ergonomic sculpting, offering balance and efficiency. OEM profiles are slightly taller but versatile for general use, while DSA and XDA profiles have flat, uniform designs that provide a consistent key feel, appealing to those who prefer level typing surfaces.

Types of Keycap Printing Techniques

Keycap printing techniques are essential for adding legends, symbols, or designs to keycaps. These methods not only affect the appearance but also determine the durability of the legends over time.

From molding and material selection to legend production and finishing, each technique offers distinct advantages, catering to different preferences and budgets.

	Pros	Cons
Double-Shot Injection Molding	Exceptional durability High contrast and sharp legends A wide range of styles and design customization Allow RGB backlighting	Limited color options More expensive than normal printing methods
Pudding	Vibrant RGB illumination through sides and legends Affordable and widely available in various styles Compatible with most mechanical keyboards	Often made of ABS, which may wear faster than PBT Limited tactile or sound improvements over standard keycaps
Laser Etching	Precise and detailed Letters are impossible to wear off Customizable	Not as vibrant as other printing methods Can be invisible in black keycaps
Dye Sublimation	Highly resistant to wear and fading Vibrant colors, long-lasting results Sharp and vibrant legends	Only work on PBT keycaps Only on non-backlit caps Limited colors and customization
UV Printing	Can be used on various keycap materials Customizable	May wear off with extended use
Pad Printing	Most common method Cost-efficient Variety of colors	Worse durability Less crisp and sharp legends Not compatible with backlit keycaps

Now that you have more insight into keycap materials, keycap profiles, etc. It’s time to talk about different types of keycap printing techniques that are used commonly in the making process of keycaps. Below are some of those most common techniques you will see around the keycaps community.

Doubleshot

A method of injection molding where the legend and the exterior base of the cap are two separate parts that are molded together. The legend will never fade away, as it goes all the way through the cap. This method of printing is usually done with ABS plastic material.

Pudding

Pudding keycaps are a unique option for RGB keyboard enthusiasts. Featuring translucent sides and a dual-layer design, they allow light to spill through both the legends and sides of the keycaps, creating a glowing "pudding" effect. These keycaps enhance the visual appeal of your keyboard, especially in low-light setups, and are widely available from popular brands like HyperX.

Their design typically incorporates ABS plastic, ensuring compatibility with most mechanical keyboards. Pudding keycaps are not just about aesthetics they also provide a subtle upgrade for users looking to highlight their keyboard’s lighting capabilities without compromising performance. Upgrade your keyboard with our best pudding keycaps review!

Dye-Sublimation (Dye Sub)

A method where the legend is a dye that is deepened down into the surface of a solid cap composed of one part. A simple way to give a vivid description of this method is to think of the legend as being tattooed into the keycap. The legend will eventually fade over time as the keycap is worn but it will hold up pretty well as the legend is engraved into the surface of the cap. This type of printing technique is usually done with PBT plastic. (Check out this article to understand how different are Double-Shot and Dye-Sub keycaps)

UV Print

A technique of digital printing takes advantage of ultraviolet (UV) light to dry or cure the ink. This is most commonly used for legends that are a third color applied into a double shot cap. The legend created by this method will fade faster than the dye-sub method does as the legend is on the surface of the cap. However, some companies have used a high-quality UV printing method that has proven to be false over the last few years.

Reverse Dye-sublimation (Reverse Dye-sub)

Reverse dye-sub is pretty the same as dye-sub, but the colors around the legend are also colored instead. This enables us to bypass the faded-legend problem while maintaining the wide range of colors available with the dye-sub printing technique. However, you have a lot more surface area to cover as well as the sides of the keycap with reverse dye-sub. This makes it significantly more exorbitant than dye-sub printing keycaps. Reverse dye-sub is mostly used when there are either many novelties, bizarre colors or uncommon fonts.

Pad Printing 

Pad printing has been the most popular method of keycap printing since the 1990s. The idea is very simple - pads are deepened down into ink, and then pressed onto the keycap to create a layer of ink on the surface of the keycap. The advantage of this method is the flexibility. This means the process can be easily acclimatized to print any character in any color requested. However, the ink is prone to wear off.

The downside of the pad printing technique is the low efficiency which thus results in high cost. Pad print is usually utilized in some high-end mechanical keyboards. Those factories who can afford the laser print machine may also use this printing method because the machine needed is not that suitably pricy to buy.

Laser Etching 

In this type of keycap printing, a laser is used to burn the requested letters into the keycaps. For this kind of keycap, letters are impossible to fade over time. The track of burning leaves on the keyboard culminates in the appearance of black letters because of the laser. So, this printing is mainly used for white keycaps or gray keycaps. Black keycaps rarely use this method or else letters will be invisible.

Types of Keyboards that Use Keycaps

Keycaps are a crucial feature across different keyboard types, influencing both functionality and feeling. There are three popular types of keyboards that use keycaps, each offering a unique typing experience and customization capabilities:

Mechanical Keyboards

Mechanical keyboards is a typing device that uses mechanical switches to record keystrokes. Favored by many typists and gamers for the mechanical keyboard's long-lasting durability and tactile feedback. Each key is equipped with an individual mechanical switch, delivering accurate input recognition and a tactile typing experience characterized by distinctive sound feedback.

Keycaps are highly customizable, with numerous materials and profiles available, allowing users to tailor their keyboards to personal preferences, making mechanical keyboards the go-to choice for enthusiasts. Whether you seek a smoother typing experience or vibrant RGB lighting, mechanical keyboards offer unmatched versatility.

Membrane Keyboards

Membrane keyboards, also called membrane switch keyboards, are designed with thin, flexible layers that function as keys. These layers consist of two sheets of rubbery material containing small cavities, similar to bubble wrap, which house electrical circuits. When a key is pressed, the circuit is closed, sending an input signal. This structure provides a simple and efficient mechanism for registering keystrokes.

These keyboards typically feature lower-profile keycaps and are suited for users who prioritize quieter typing over customization. Moreover, they lack the tactile feedback and durability found in mechanical keyboards, limiting their appeal to users who require precise or prolonged typing experiences. Visit our article to discover the difference between mechanical vs membrane keyboards.

Hybrid Keyboards

Hybrid keyboards combine key aspects of both mechanical and membrane designs, offering a mix of their strengths. A membrane layer is used for most keys, ensuring a quiet and gentle typing feel. Additionally, select keys typically intended for gaming or specialized functions use mechanical switches to provide tactile feedback and improved responsiveness.

Keycap compatibility on hybrid keyboards varies depending on the specific switches and design. This combination of features makes hybrid keyboards an excellent choice for users who want the comfort of membrane typing with the performance benefits of mechanical switches.

Types of Keycaps Buying Guide

When buying keycaps for your mechanical keyboard, it's essential to consider various factors to ensure you get the right keycap set that suits your preferences and is compatible with your keyboard.

Massed Produced vs Custom Keycaps

Mass-produced keycaps are designed for standard mechanical keyboards, manufactured in large quantities, and come in standard profiles and layouts.

On the other hand, custom keycaps are artisanal, designed for enthusiasts seeking a unique, personalized aesthetic. Crafted in smaller quantities, they feature intricate designs and materials.

While mass-produced keycaps are suitable for most keyboard users, especially those who want cost-effective and straightforward upgrades, custom keycaps are best suited for mechanical keyboard enthusiasts who are passionate about creating a unique and personalized keyboard setup.

Keycaps for Keyboards with RGB Lighting

If your keyboard has RGB or other backlighting features, choose keycaps that are compatible with backlighting, such as translucent or shine-through keycaps.

Customization: For maximum RGB lighting customization, consider keycaps that allow you to mix and match colors or use translucent keycap sets that create a rainbow-like effect when combined with RGB backlighting.

Compatibility: Ensure that the keycaps you choose are compatible with your specific keyboard layout and switch type to ensure a proper fit.

Keycap Sizes 

Keycaps are indeed universal and come in various sizes, and the size of a keycap is determined by its position on the keyboard and its role. 

Use a ruler or calipers to measure the keycap sizes. Note the measurement in millimeters (mm). Keycap sizes are often expressed in "U" units, where 1U equals approximately 19mm, so you can also convert your measurement to U units if needed.

Keyboard Sizes 

Keyboard sizes refer to the different form factors and layouts of computer keyboards, each with its own configuration of keys and dimensions. Common keyboard sizes include:

Full-Sized Keyboard: The standard keyboard size with all the keys, including the alphanumeric keys, function keys (F1-F12), navigation keys, number pad, and various control keys.

Tenkeyless (TKL) Keyboard: A compact keyboard that omits the number pad, offering a more compact layout while retaining the essential keys.

60% Keyboard: An even more compact keyboard with only the alphanumeric keys, some modifiers, and function keys accessible through layers or key combinations.

40% Keyboard: Extremely compact and minimalist, featuring only the alphanumeric keys and a limited set of modifiers, often used by keyboard enthusiasts for their portability and simplicity.

Keyboard Size	Number of keys	Best for
Full-Sized Keyboard (100%)	104-108	General typing, office work, data entry
Tenkeyless (TKL) Keyboard	87-88	General typing, office work, and gaming
60% Keyboard	61	Portable use, minimalistic setups
40% Keyboard	40-49	Minimalistic setups, specialized tasks

Discovering more about the size of a mechanical keyboard can provide you knowledge to make the best decision.

Keycap Thickness

Keycap thickness is the measurement of the material's thickness used to construct keycaps, it directly influences the feel, sound, and overall typing experience. Thicker keycaps tend to feel sturdier and produce deeper sounds, while thinner ones feel lighter and emit sharper sound profiles.

• Thicker Keycaps: Typically 1.5mm to 2mm or more, these keycaps offer added weight and stability, reducing wobble and producing a richer, more satisfying typing sound.
• Thin Keycaps: Measuring around 1mm or less, thin keycaps provide a lighter typing experience with a quieter sound that is perfect for users who appreciate a sleek and minimalistic keyboard design.

Keyboard Layouts

A keyboard layout refers to the specific arrangement of keys on a computer or typewriter keyboard, including the mapping of characters and symbols to individual keys. 

Different keyboard layouts are designed to accommodate various languages, scripts, and regional preferences, and they determine how keystrokes are interpreted by a computer. ANSI and ISO are two most common types.

• ANSI Layout (American National Standards Institute): The ANSI layout, used mainly in the U.S. and English-speaking countries, features a rectangular Enter key above the right Shift key and a longer Left Shift key on the left side. It's designed for English and common in North America.
• ISO Layout (International Organization for Standardization): The ISO layout, used in many European regions, has an "L"-shaped Enter key, with the Backslash key often above it. The Left Shift key is shorter, and the Right Shift key is longer compared to ANSI layouts. It's chosen for multilingual support in Europe.

In Conclusion 

We explored various types of keycaps, including ABS and PBT for durability, resin and rubber for unique aesthetics and textures, and metal and wood for premium customization. The choice of keycap material, profile, and printing technique can significantly impact the typing experience and aesthetics of a keyboard.

Understanding the differences between these keycap types empowers enthusiasts and users to make informed decisions when customizing their keyboards. 

FAQs 

Which Keycap Options Provide A Quieter Typing Experience?

Rubber keycaps and keycaps with dampeners or o-rings are good options for a quieter typing experience.

Can I Mix and Match Different Keycap Materials?

Yes, you can mix and match keycap materials on your mechanical keyboard, but compatibility is crucial. Factors like stem design, actuation force, and keycap construction must align with your keyboard’s switches. Ensuring these aspects match will provide a seamless typing experience without compromising performance or stability.

Which Keycap Types are Known for Their Durability?

PBT and POM keycaps are known for their durability, as they are less prone to wear and shine over time compared to ABS keycaps.

Which Keycap Types are Known for Their Aesthetics?

Resin and artisan keycaps are known for their aesthetics, as they often feature unique and visually striking designs, making them popular among keyboard enthusiasts for customization.

Are There Different Types of Keycaps?

Keycaps are categorized by profiles, heights, and materials. Common profiles include OEM, Cherry, DSA, and SA, each offering a unique typing feel and aesthetic. Additionally, materials like ABS, PBT, and resin further differentiate keycaps by durability, texture, and sound.

What is R1 R2 in Keyboard?

R1, R2, R3, and R4 represent the heights of keycaps in different rows on a keyboard. R1 is the shortest, used on the bottom row, while R4 is the tallest, used on the top row. These standardized heights help create an ergonomic typing experience and align with specific keyboard layouts.