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Layout guide

Keyboard layouts & sizes.

Before we tool a keycap set, the first question is always "which sizes and which standards does it need to cover?" Here is the map — full-size to 60%, and ANSI vs ISO vs JIS — from the side that has to make every cap fit.

By OSHID Engineering Team · Updated 2026-07-06

Quick answer

By size: full-size ≈ 104–108 keys, TKL ≈ 87, 75% ≈ 82–84, 65% ≈ 66–68, 60% ≈ 61, 40% ≈ 44–48. By standard: ANSI (US) has a wide Enter and long left Shift; ISO (EU) has a tall L-shaped Enter plus an extra key; JIS (Japan) adds several keys around the spacebar. A keycap kit must carry the right Enter, Shift, bottom-row and extra caps to cover the layouts you sell into.

Assembled 65% mechanical keyboard with a custom OSHID keycap set
A 65% layout (~68 keys) — arrows kept, function row dropped — built with one of our keycap sets.

Keyboard sizes by key count

SizeApprox. keysWhat's droppedWho it's for
Full-size (100%)104–108NothingData entry, office, number-pad users
1800 / 96%~98–100Gaps compressed, numpad keptNumpad in a smaller footprint
TKL (80%)87–88Number padGaming, desk space, most popular tenkeyless
75%82–84Numpad; function row compressedCompact with F-row and arrows
65%66–68Function row; keeps arrowsCompact but arrow keys retained
60%~61F-row, arrows, nav clusterMinimalists; arrows via layers
40%44–48Number row tooEnthusiast ultra-compact

Counts are approximate — compact layouts combine or drop keys differently by design.

ANSI vs ISO vs JIS

Size tells you how many keys; the standard tells you their shape. This is where keycap kits succeed or fail to fit.

ANSIISOJIS
RegionUS & much of the worldEuropeJapan
Enter keyWide, horizontalTall, L-shapedTall, L-shaped
Left ShiftLongShort + extra keyShort + extra key
Spacebar areaOne long spacebarOne long spacebarShorter space + extra keys
Approx. extra keysBaseline+1 vs ANSISeveral more than ANSI
Kit impactBase kitNeeds ISO Enter, short Shift, extra capNeeds JIS spacebar row + extra caps

What layout means for a keycap kit

This is the part buyers underestimate. A keycap set is not one fixed list of caps — it is a base kit plus extension kits. To cover the sizes and standards above, a complete set needs: the alphas and common modifiers (base), a range of bottom-row modifier widths for different 60%/65% boards, an ISO Enter and short Shift, JIS caps if you sell into Japan, and stepped or non-stepped Caps Lock options. The more layouts you want one set to fit, the more unique caps we tool — and that feeds directly into cost and minimums.

Because every unique cap is another mold cavity and another QC lane, kit coverage is one of the biggest drivers of a keycap project's MOQ and cost. Deciding coverage before tooling is the single best way to control both.

How to spec layout coverage in your RFQ

Tell us three things and we can quote precisely: (1) which sizes the set must fit (e.g. TKL + 65% + 60%), (2) which standards (ANSI only, or ANSI + ISO + JIS), and (3) your profile — see the profiles we tool. With that, we map the exact kit list and the cap count that drives your quote.

FAQ

What is the difference between ANSI and ISO?

Mainly the Enter and left-Shift keys: ANSI has a wide Enter and long Shift; ISO has a tall L-shaped Enter, a shorter Shift with an extra key, and one more key overall.

How many keys is a 60% or TKL keyboard?

Roughly: 60% ≈ 61 keys, 65% ≈ 66–68, 75% ≈ 82–84, TKL ≈ 87, full-size ≈ 104–108. Exact counts vary by design.

Will one keycap set fit every keyboard?

Only if it includes enough kits — base alphas plus extras for different bottom rows, ISO/JIS support and stepped Caps Lock. Coverage depends on kit planning, not just key count.

Know your sizes and standards?

Get a kit quote →