One of the most common questions we get at Urelab: "Will these keycaps fit my keyboard?" It's a fair question — keycap compatibility isn't always obvious, especially for beginners. This guide breaks it all down so you can shop with confidence.
1. Check Your Keyboard Layout First
The single most important factor is your keyboard's layout. Common layouts include:
- 100% (Full-size) — 104 keys, includes numpad
- 87-key (TKL / Tenkeyless) — no numpad
- 84-key — compact TKL variant
- 75% — compact with function row, ~84 keys
- 68-key (65%) — no function row, has arrow keys
- 60% — minimal layout, no function row or arrow keys
- Alice Layout — ergonomic split layout with unique key sizes
Most keycap sets are designed for standard layouts. Always check the product listing to confirm which layouts are supported before purchasing.
2. Understand Switch Compatibility (MX vs. Others)
Keycaps mount onto switches via a stem. The most common stem type is the Cherry MX cross (+) stem, which is compatible with the vast majority of switches on the market — including Cherry MX, Gateron, Kailh, and many others.
However, some switches use different stems:
- Topre switches — require Topre-compatible keycaps or an MX adapter
- Alps switches — require Alps-compatible keycaps (rare)
- Low-profile switches (e.g., Kailh Choc) — require low-profile keycaps
All Urelab keycap sets are designed for MX-compatible switches unless otherwise stated.
3. Watch Out for Non-Standard Key Sizes
Some keyboards use non-standard key sizes that can make finding compatible keycap sets tricky. Common culprits include:
- Right Shift key — some 75% and 65% boards use a 1.75u right shift instead of the standard 2.75u
- Bottom row — some boards use a 6.25u spacebar (standard) while others use 6u or 7u
- Modifier keys — compact layouts sometimes rearrange or resize Ctrl, Alt, and Fn keys
Before buying, compare your keyboard's key sizes against the keycap set's included keys. Most quality sets include extra keys ("novelties" or "spacebars kit") to cover common non-standard layouts.
4. Profile Compatibility
Keycap profile refers to the shape and height of the keycaps. While any MX-compatible keycap will physically fit any MX switch, mixing profiles on the same board is generally not recommended — it creates an uneven typing surface.
Popular profiles include:
- Cherry — sculpted, low-profile, widely loved
- OEM — slightly taller than Cherry, common on stock keyboards
- SA — tall, spherical, retro feel
- MOA — uniform height, spherical top
- XDA / DSA — flat, uniform profile
Stick to one profile per board for the best typing experience.
5. Quick Compatibility Checklist
Before you buy, run through this checklist:
- ✅ Does the keycap set support my keyboard layout (75%, 65%, Alice, etc.)?
- ✅ Does my keyboard use MX-compatible switches?
- ✅ Does the set include the right spacebar size for my board?
- ✅ Does the set include a 1.75u right shift if my board needs one?
- ✅ Am I sticking to one keycap profile across the whole board?
Still Not Sure?
Every Urelab keycap set listing includes a full compatibility breakdown. If you're still unsure whether a set will fit your keyboard, feel free to reach out — we're happy to help you find the perfect match.
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