Best 40% Keyboard 2026: 6 In-Stock Picks From $55.99 (Staggered, Ortho and Split)

Quick Answer: The best 40% keyboard for most people is the Keychron Q9. It’s a CNC-aluminum, gasket-mounted, hot-swap 40% board with QMK and VIA, and Keychron sells it fully assembled for $79.99 (compare-at $159.99) on its own store. On a tighter budget, the Epomaker TH40 ($55.99) adds tri-mode wireless and a 3,000 mAh battery. If you want a straight grid instead of staggered rows, the Epomaker LUMA40 ($92.79) is the in-stock ortholinear pick. Know what you’re giving up first: a 40% keyboard has no number row, so every number and most symbols live on a layer you reach by holding a key.

A 40% keyboard is the smallest layout most people can still type full sentences on. It keeps the letters, a few modifiers and a spacebar, usually in fewer than 50 keys, and moves numbers, symbols, arrows and F-keys onto programmable layers. It’s also the size where buying gets awkward: most enthusiast 40% boards are made in a single group-buy run and then disappear. So we compared what you can actually order on November 5, 2026, using the makers’ own product pages and spec sheets plus the store catalogs of Keychron, Epomaker, Vortex, MechanicalKeyboards.com, Chosfox, Keyboardio, KBDfans, CannonKeys, Divinikey, Keebsforall and Dangkeebs. We don’t test keyboards ourselves; specs and prices below are as listed by each maker or seller.

Best 40% keyboards at a glance

By the numbers: Keychron’s Q9 listing shows the fully assembled board at $79.99 against a $159.99 compare-at price, a 50% cut, and Divinikey’s sold-out Q9 listing was priced at $104.25 to $149. On November 5, 2026, all 11 distinct 40% keyboards listed at CannonKeys, Divinikey, Keebsforall and Dangkeebs were sold out or closed group buys. Key counts on this list run from 44 (Epomaker TH40, Keyboardio Atreus) to 50 (Vortex Core Plus, per MechanicalKeyboards.com). Weight varies even more: Keychron lists the aluminum Q9 at 1,050 g, while Keyboardio lists the Atreus at 310 g, less than a third as heavy.

What a 40% keyboard removes, and the three shapes it comes in

Compared with a full-size board, a 40% drops the numpad, the navigation cluster, the arrows, the function row and the number row. That last one is what separates it from a 60%. The usual fix is a layer: hold a function key and the Q-to-P row becomes 1 to 0. Our keyboard sizes explained guide shows how each size compares by key count.

The 40% label also covers three quite different key arrangements:

If this is your first 40%, start with a staggered board. Voltcave’s 40% guide makes the same point about the original Vortex Core: sticking with “the standard staggered key arrangement” lowers the barrier, because you only have to learn the layers. For grid boards beyond 40%, see our best ortholinear keyboard guide.

1. Keychron Q9: Best Overall

The Q9 wins because nothing else here gives you a full aluminum, gasket-mounted custom-style board at this price. At $79.99 it costs less than the LUMA40 and $49 less than the Vortex Core Plus on Vortex’s own store. The trade-offs are real, though. It’s wired only, and at 1,050 g it’s a desk keyboard rather than something you’ll carry around. One reviewer on Keychron’s page loved it but said they still want a wireless version. At 326 mm long it’s also 68 mm longer than the TH40 (258 mm), so it saves less desk space than the 40% label suggests. If you want this build quality one size up, with a number row, see our best 60% keyboard picks.

2. Epomaker TH40: Best Budget and Best Wireless Value

The TH40 is the cheapest way into a wireless 40% that still has hot-swap sockets and a gasket mount. It’s plastic rather than aluminum, but at about 0.5 kg with a 3,000 mAh battery it’s the better choice for a laptop bag. The split spacebar with a function key in the middle is a smart 40% touch: your thumb can reach the number layer without leaving the home row. Epomaker’s store lists a 1-year warranty and 30-day returns.

3. Vortex Core Plus: Best Low-Profile Staggered 40%

The AAA batteries are the thing to know. You can’t charge the Core Plus over USB-C; you swap batteries like a mouse. That’s an advantage if you travel and hate dead built-in batteries, and an annoyance if you don’t keep spares. Vortex’s own store had Black and Retro Grey at $129 on November 5 with White sold out, while MechanicalKeyboards.com had several colors from $119 to $129. The original wired Core (47 keys, Cherry MX switches, $89 to $99) was sold out at both stores. For more low-profile options in every size, see our best low-profile mechanical keyboard guide.

4. Chosfox Init40: Best Choc Low-Profile 40%

Pick the Init40 over the Vortex Core Plus if you want a rechargeable battery and Kailh Choc switches instead of Gateron low-profile ones. One review on Chosfox’s page calls it one of the most approachable 40% boards, because the familiar staggered rows make the switch “much smoother than ortholinear.” Chosfox also offers a JIS firmware download, which is rare at this size.

5. Epomaker LUMA40: Best Ortholinear 40%

The LUMA40 is for people who want a 40% grid without building a kit, and at 410 g it weighs well under half as much as the Q9. Turn the RGB off, though: Epomaker’s own 7-hour figure with lights on won’t last a full workday. Before you buy, know that a grid is a second thing to learn on top of the missing number row.

6. Keyboardio Atreus: Best Ergonomic 40%

The Atreus splits its keys into two angled halves in one small case, so your wrists stay straighter than on a normal keyboard without the cost of a true two-piece split. It’s the hardest board here to learn, since the layout, the columns and the missing rows are all new at once. If you’d like a full split ergonomic board instead, our best ergonomic keyboard guide covers larger options.

40% keyboard specs compared

Specs from each maker’s product page or spec table, and from MechanicalKeyboards.com for the Vortex Core Plus. Prices checked on November 5, 2026, before shipping and tax.

The 40% boards you can’t buy right now

Most of the 40% boards enthusiasts talk about are group buys: one production run, then gone. Here’s what the big enthusiast vendors listed on November 5, 2026.

The pattern is clear: if you want a 40% this month, buy from a brand with its own store and ongoing stock. If you have your heart set on a boutique 40%, watch for the next group buy and plan on a wait of several months. Our best barebone keyboard kit guide explains what a kit leaves out.

Watch out: not every “40” is a 40% keyboard

• The Keychron B40 is a 75% board. Keychron’s spec sheet lists it as a “75% Alice layout” with quiet scissor keys, tri-mode connectivity and an 800 mAh battery, for $49.99. It’s not a smaller Q9.
• “40% split” Corne kits are a different hobby. Boardsource lists its Corne as a “DIY Keyboard Kit – 40% Split” for $36 (sold out on November 5), and it’s a kit you finish yourself. Fully assembled wireless Cornes cost $367.50 to $375 at Typeractive.
• Some 40% kits need soldering. NovelKeys’ Skelett 40 is $32 and in stock, but NovelKeys says the Skelett boards are barebones DIY kits that “require soldering to be completed.”
• Epomaker’s Alice40 isn’t on sale yet. Epomaker’s Alice40 listing, published October 22, 2026, is marked “Coming Soon” with no price or specs.
• KBDfans’ Agar Mini is a pre-order, not a ready keyboard. The ready-to-use dual-mode Agar Mini (with PBTfans keycaps) started at $216 (compare-at $240) as a pre-order on November 5, and its listing still showed a mid-June 2026 ETA. KBDfans says its 300 mAh battery lasts up to 3 months on ZMK firmware.

How to choose a 40% keyboard

• Decide whether you can live without the number row. If you type a lot of numbers, passwords or spreadsheet data, a 40% will slow you down at first. A 60% keyboard keeps the number row in nearly the same footprint.
• Start staggered unless you want the grid. The Q9, TH40, Core Plus and Init40 only ask you to learn layers. The LUMA40 and Atreus also change where your fingers travel.
• Pick wired or wireless on purpose. The Q9 and Atreus are wired only. The TH40, Init40 and LUMA40 have built-in batteries, and the Core Plus runs on AAA batteries.
• Check the firmware before you buy. VIA, VIAL, QMK and Kaleidoscope all let you move layers around. Our how to program a mechanical keyboard guide walks through the basics.
• Mind the keycaps. A 40% has unusual bottom rows (split spacebars, 2U or dual 1U spaces), so a standard keycap set may not cover it. Check the set includes a 40s kit or matching spacebars.

The bottom line

The Keychron Q9 ($79.99 assembled at Keychron, compare-at $159.99) is the best 40% keyboard for most people: aluminum, gasket-mounted, hot-swap and fully programmable, at half its listed compare-at price. For wireless on a budget, the Epomaker TH40 ($55.99) has a 3,000 mAh battery and VIA. Want a low-profile staggered board? Choose the Vortex Core Plus ($119 to $129) if you’re happy with AAA batteries, or the Chosfox Init40 ($117 to $122) for a rechargeable board with Choc V2 switches. For a grid, the Epomaker LUMA40 ($92.79) is the in-stock pick, and for ergonomics, the Keyboardio Atreus ($149 to $169) fits a desktop’s worth of keys into 44. Whichever you pick, expect a few weeks of learning layers before you’re back to full speed.

Sources: Keychron Q9 and B40 product pages and spec sheets; Epomaker TH40, LUMA40 and Alice40 listings and spec tables; Vortex (vortexgear.store) Core Plus, Core and RGB Core listings; MechanicalKeyboards.com Vortex Core Plus and Core Aluminum listings; Chosfox Init40 product page; Keyboardio Atreus product page and tech specs; KBDfans Agar Mini and Agar Micro listings; store catalogs of CannonKeys, Divinikey, Keebsforall, Dangkeebs, NovelKeys, Boardsource and Typeractive; Voltcave’s 40% keyboard guide. All checked November 5, 2026.