Buying a new set of keycaps is one of the easiest ways to transform the look and feel of a mechanical keyboard. But before you fall in love with a cute pink, pastel, or kawaii keycap set, there is one important question to answer:

What keycaps fit my keyboard?

With so many keyboard layouts, keycap profiles, sizes, and compatibility terms, choosing the right set can sometimes feel confusing.

The good news is that checking keycap compatibility is usually much easier than it looks.

In this guide, we'll explain what you need to check before buying keycaps, including your keyboard layout, keycap sizes, switch stems, keycap profile, and ANSI vs. ISO compatibility.

By the end, you'll know exactly what to look for when choosing your next set of cute and kawaii keycaps.

Quick Answer: Will These Keycaps Fit My Keyboard?

In most cases, aftermarket keycaps will fit a standard mechanical keyboard if you check a few important things first.

The main factors are:

• Keyboard layout
• Keycap sizes
• Switch stem compatibility
• Keycap profile
• ANSI or ISO layout
• Special or non-standard keys

Most traditional mechanical keyboard switches use a cross-shaped MX-style stem, which makes them compatible with a large variety of aftermarket keycaps.

However, not every keycap set fits every keyboard.

For example, a 75% keyboard may have different Shift, Enter, Backspace, or bottom-row key sizes than a standard 60% keyboard.

That's why it's important to check your keyboard before buying.

1. Understand the Basics of Keycap Compatibility

Before choosing a cute keycap set, let's look at what actually determines whether a keycap will fit your keyboard.

A keycap has several important parts.

The Keycap Top

This is the part you press with your fingers. It determines much of the appearance and feel of the keycap.

The Stem

The stem is the small connector underneath the keycap that attaches to the mechanical switch.

Many popular mechanical keyboard switches use an MX-style cross-shaped stem.

This includes many switches from brands such as Cherry, Gateron, Kailh, and other manufacturers.

The Keycap Shape

The shape and height of a keycap are determined by its profile.

Popular profiles include:

• Cherry
• OEM
• XDA
• MDA
• MOA
• MAO

A keycap profile affects the typing feel and overall appearance of your keyboard.

2. Check Your Keyboard Layout

The first thing you should check is your keyboard layout.

The number of keys on your keyboard can give you a general idea of what kind of keycap set you need.

Here are some common mechanical keyboard layouts.

60% Keyboard

A typical 60% keyboard has around 61 keys.

It removes the function row, arrow keys, and navigation cluster found on larger keyboards.

If you have a standard 60% keyboard, many 60% compatible keycap sets will work well.

65% Keyboard

A typical 65% keyboard has around 67–68 keys.

It keeps dedicated arrow keys and usually adds a few navigation keys while remaining compact.

75% Keyboard

A 75% keyboard usually has around 80–84 keys, depending on the design.

The function row is retained, but the keys are arranged more compactly than on a TKL keyboard.

TKL Keyboard

TKL means Tenkeyless.

A typical TKL keyboard has around 87 keys.

It keeps the function row and navigation cluster but removes the number pad.

96% Keyboard

A 96% keyboard keeps most of the functionality of a full-size keyboard while using a more compact layout.

Depending on the design, the number of keys can vary.

Full-Size Keyboard

A traditional full-size keyboard usually has around 104 keys in a standard ANSI layout.

It includes:

• Function row
• Arrow keys
• Navigation cluster
• Number pad

3. Keycap Size Matters More Than You Think

This is where many first-time keycap buyers run into problems.

Not every key on a keyboard is the same size.

Most letter keys are 1U, meaning they are one standard key unit wide.

But larger keys use different sizes.

For example:

These sizes are common rather than universal.

Some keyboards use unusual bottom rows, different spacebar sizes, split spacebars, or non-standard Shift keys.

This is why simply counting the number of keys isn't always enough.

4. What Does a Keycap Set With 120 or 130 Keys Mean?

You may have noticed that many aftermarket keycap sets contain far more keys than your keyboard actually has.

For example, you might see:

• 120-key sets
• 122-key sets
• 130-key sets
• 140-key sets
• 141-key sets

Why?

Because a larger keycap set can include extra keys for different keyboard layouts.

For example, one set might include different:

• Shift keys
• Enter keys
• Bottom-row keys
• Spacebars
• Modifiers
• Windows / Mac keys
• Novelty keys

This allows one keycap set to work with more keyboard layouts.

That's one reason larger keycap sets can be useful if you are not completely sure which layout you have.

However, more keys does not automatically mean universal compatibility.

Always check the product's compatibility chart before purchasing.

5. Check Your Keycap Profile

Another important factor is the keycap profile.

The profile describes the shape and height of the keycaps.

Different profiles can make the same keyboard look completely different.

Some popular profiles include:

Cherry Profile

Cherry profile is a popular sculpted profile with a relatively low height.

It is widely used for mechanical keyboards and has a familiar typing feel.

OEM Profile

OEM is another very common profile.

Many pre-built mechanical keyboards use OEM-style keycaps, making it a familiar choice for many users.

XDA Profile

XDA keycaps have a relatively uniform shape across rows.

They are popular for their larger, flatter key surfaces.

MDA Profile

MDA has a rounded, comfortable shape and is often used for aesthetic mechanical keyboards.

MOA Profile

MOA keycaps are known for their rounded, playful appearance.

They are particularly popular among people building cute or kawaii-style keyboards.

MAO Profile

MAO is another rounded style that can create a softer, more playful aesthetic.

If you're building a pastel or kawaii mechanical keyboard, rounded profiles can create a very different visual style compared with traditional Cherry or OEM keycaps.

6. ANSI vs. ISO: Which Keyboard Layout Do You Have?

One of the most important things to check before buying keycaps is whether your keyboard uses an ANSI or ISO layout.

ANSI Layout

ANSI is commonly used in the United States and many other regions.

A typical ANSI keyboard has:

• Rectangular Enter key
• 2.25U left Shift
• Standard 6.25U spacebar

ISO Layout

ISO keyboards are common in many European countries and use a different arrangement.

The most noticeable difference is usually the Enter key.

An ISO Enter key is typically taller and has an L-shaped appearance.

The left Shift key is also different.

7. Do Keycaps Fit All Mechanical Keyboard Switches?

Not necessarily.

The switch stem is important.

Many popular mechanical switches use an MX-style cross stem, which is compatible with a large range of aftermarket keycaps.

However, there are also:

• Low-profile switches
• Optical switches
• Proprietary switch designs
• Other non-standard mounting systems

These may require specific keycaps.

Before buying, check what type of switches your keyboard uses.

If you have a standard mechanical keyboard with MX-style stems, you will generally have many aftermarket keycap options available.

8. Can I Put Kawaii Keycaps on My Mechanical Keyboard?

Absolutely — and this is where things get fun.

Kawaii keycaps aren't limited to a particular keyboard size.

You can create a cute mechanical keyboard using:

• Pink keycaps
• Pastel keycaps
• Cat keycaps
• Bunny keycaps
• Bear keycaps
• Transparent keycaps
• Translucent keycaps
• Pastel gradient keycaps
• Novelty keycaps

The important part is making sure the set contains the correct sizes for your keyboard.

For example, if you have a 75% keyboard, look for a keycap set that specifically supports your 75% layout and includes the required modifier and Shift keys.

9.How to Check Keycap Compatibility Before Buying

Before clicking "Add to Cart", use this simple checklist.

Step 1: Identify Your Keyboard Layout

Is it:

• 60%?
• 65%?
• 75%?
• TKL?
• 96%?
• Full-size?
• Another custom layout?

Step 2: Check ANSI or ISO

Look at your Enter key and left Shift key.

Step 3: Check the Keycap Sizes

Pay special attention to:

• Shift
• Enter
• Backspace
• Spacebar
• Bottom-row modifiers

Step 4: Check Your Switch Stem

Make sure your switches use a compatible stem.

Step 5: Check the Keycap Profile

Choose a profile that works with your keyboard and matches the typing feel and aesthetic you want.

Step 6: Check the Product Compatibility Chart

This is the final and most important step.

If the product description includes a compatibility chart, compare it with your keyboard before ordering.

Final Thoughts: Find the Right Keycaps, Then Make Them Yours

Choosing keycaps doesn't have to be complicated.

The most important things to check are your keyboard layout, key sizes, switch stem, keycap profile, and ANSI or ISO layout.

Once you know those details, you can start choosing the fun part — the design.

Whether you're looking for:

• Cute cat keycaps
• Pink keycaps
• Pastel keycaps
• Kawaii keycaps
• Transparent keycaps
• RGB-friendly keycaps
• Cute novelty keycaps

there are plenty of ways to transform an ordinary mechanical keyboard into something that feels uniquely yours.

And if you're building a kawaii desk setup, the right keycap set can completely change the personality of your keyboard.

Ready to give your keyboard a new look?

Explore ARKTCAT's collection of cute, kawaii, and pastel keycaps and find a set that matches your keyboard and your style.

Shop Kawaii Keycaps → ARKTCAT

Frequently Asked Questions

Do all keycaps fit all mechanical keyboards?

No. Keycap compatibility depends on factors such as the switch stem, keyboard layout, key sizes, and keycap profile. Standard MX-style switches are compatible with many aftermarket keycaps, but non-standard keyboards may require specific sets.

How do I know what keycaps fit my keyboard?

First identify your keyboard layout and check the key sizes of your Shift, Enter, Spacebar, and bottom row. Then check the switch stem and the keycap set's compatibility information.

Do keycaps fit Cherry MX switches?

Many aftermarket keycaps are designed for MX-style cross stems, making them compatible with many Cherry MX-style mechanical switches.

Do keycaps fit Gateron switches?

Many Gateron switches use an MX-style stem and are compatible with a wide range of aftermarket keycaps. Always check the specific switch and keycap set before purchasing.

What keycaps fit a 60% keyboard?

Many 60% keyboards use a standard 61-key ANSI layout, but layouts can vary. Check the spacebar, bottom row, and Shift key sizes before buying.

What keycaps fit a 75% keyboard?

75% keyboards can use different layouts and key sizes. Check the right Shift, bottom row, and other non-standard keys against the keycap set's compatibility chart.

Are kawaii keycaps compatible with mechanical keyboards?

Yes. Kawaii keycaps can be compatible with many mechanical keyboards as long as the keycap stem and key sizes match the keyboard.