Keycap chooser: find custom keycaps for your mechanical keyboard

This guide covers everything needed to use a keycap chooser effectively: matching profiles and materials to your board, confirming layout compatibility, and finding a custom keycap set that suits your mechanical keyboard and setup.

Choose the right keycap set

Choosing mechanical keyboard keycaps starts with three essential checks: switch stem type, keyboard layout, and individual key size.

Check keyboard layout and sizes

Knowing how to choose a keycap set for a mechanical keyboard begins with the stem. Most boards use an MX-style cross stem, the most common keycap standard across Cherry, Gateron, Kailh, Outemu, Akko, Durock, Everglide, and Panda switches. Confirming the stem type takes seconds and removes a frequent compatibility problem.

• Layout type: ANSI and ISO layouts differ most noticeably at the Enter key. ISO uses a taller, L-shaped key, while ANSI uses a wide rectangular one. Confirm the layout on your board before selecting a set, because not every keycap set includes both shapes.
• Keyboard size: A 161-key set with a 6.25U spacebar covers most 60%, 65%, 75%, 80%, 96%, and 100% boards. Single-colour double-shot PBT sets may be limited to 60%, 80% TKL, and 100% layouts, so check the product listing for each size configuration.
• UK-specific needs: UK users with an ISO layout need full UK legends and the correctly shaped Enter key. Many ANSI-focused sets omit the required ISO keys, so filtering for ISO support from the outset saves time and avoids returns.

The standard 6.25U spacebar is the industry baseline for broad compatibility across these keyboard sizes. When a set supports both ISO and ANSI, verify that it includes the correctly sized modifier keys for each layout; modifier sizes can vary between manufacturers even when the layout label looks the same.

Match keycap colours to your setup

Colour affects the finished setup more than it first appears. The case colour, desk surface, and ambient RGB output all influence whether a keycap set looks cohesive. Reddit discussions among keyboard enthusiasts often recommend comparing the set with the whole desk environment rather than viewing the keycaps in isolation.

Double-shot keycaps with RGB shine-through legends add another consideration: legend colour interacts with the RGB output. A translucent or light legend on a dark keycap usually shows backlighting more clearly than an opaque dark legend on the same board. Dual-colour combinations, with contrasting keycap and legend colours, can create a defined RGB effect while preserving daytime legibility.

Compare custom keycap options

Customizing keycaps involves more than colour. Profile determines the height and shape of each key, affecting typing feel, sound, and finger travel. The three most common keycap profiles in current use are OEM, Cherry, and XDA, and the differences come down to height, sculpt, and top surface.

OEM and Cherry are the most common keycap profiles by adoption. Cherry sits slightly lower than OEM, creating a more ergonomic typing position with less finger strain during extended sessions. XDA replaces sculpted rows with a uniform height and spherical keycaps feel, which suits boards with non-standard layouts but removes the positional guidance of sculpted profiles.

Find a compatible keycap set

PBT and ABS create different typing experiences in practice. PBT is a preferred keycap material among keyboard enthusiasts because it is denser than ABS, resists oils and shine, and can produce a deeper typing sound. Double-shot keycaps use two injection-moulded plastic layers to create a crisp, permanent legend that will not fade with use. Blank keycaps suit users who type by feel and prefer a clean appearance without printed legends.

For a practical starting point, custom PBT keycap combinations are available for 60%, 80% TKL, and 100% boards with ISO or ANSI layouts and Cherry MX-style switch compatibility. Bilingual users can explore the Arabic keycap collection, which features dual Arabic and English legends on PBT keycaps across ISO and ANSI layouts, with Cherry, OEM, and XDA profile options. Those comparing layout and profile combinations can browse the custom PBT keycap sets to select layout, profile, and colour before committing to a purchase.

Frequently asked questions

How do I know which keycaps will fit my keyboard?

The right choice depends on three checks: the switch stem type, keyboard layout, and spacebar size. Most mechanical keyboards use an MX-style cross stem, which fits the vast majority of keycap sets on the market. Next, identify whether the board uses an ANSI or ISO layout; the Enter key has a different shape in each standard. Finally, confirm the spacebar size. At 6.25U, it is the industry-standard size and fits most boards from 60% through to 100%. Checking all three details before purchasing prevents the most common compatibility errors.

Is PBT or ABS the better keycap material for daily use?

PBT is usually the stronger choice for daily use. As a keycap material, it is denser, more resistant to oils and chemicals, and far less likely than ABS to develop shine over time. PBT also produces a deeper, more muted typing sound, which many keyboard enthusiasts prefer. ABS keycaps feel smoother and can display more vivid colours, but their surface degrades visibly with heavy use. For a set that preserves its quality and texture through years of typing and gaming, PBT remains the consistent recommendation among enthusiasts.

What is the difference between OEM and Cherry keycap profiles?

Both OEM and Cherry are sculpted profiles: each row sits at a different angle to guide finger placement. That contrasts with uniform profiles such as XDA, where every row shares the same height. The difference comes down to overall height and the angle of the top row. Cherry is lower than OEM, reducing finger travel and potentially easing wrist strain during extended typing sessions. OEM remains a popular choice for gaming because of its familiar feel, while Cherry suits keyboard enthusiasts who prioritise ergonomic typing comfort and a deeper acoustic profile.