40% Keyboards and Typing Speed: Are They Worth It?
A 40% keyboard drops the number row and everything else onto layers. I tested whether these tiny boards help or hurt typing speed — and who should actually use one.
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The Short Version
A 40% keyboard is a radically compact board that strips away the number row, the function row, and often the dedicated arrow and symbol keys, leaving roughly the letters and a few modifiers. Everything that's missing gets accessed through layers — you hold a function key to temporarily turn your letter keys into numbers or symbols. It's the keyboard equivalent of minimalism taken to an extreme.
So are they worth it for typing speed? My honest answer: for pure prose typing, a well-learned 40% board can be just as fast as a bigger one, because your letters are all still there under your fingers. But there's a real learning curve, and anything involving numbers or symbols gets slower unless you deeply internalize the layers. They're a fascinating tool for the right person and a frustrating gimmick for the wrong one. Let's figure out which you are.
How a 40% Keyboard Works
The defining feature of a 40% is layers. Because there physically aren't enough keys for numbers, symbols, and navigation, those functions are stacked onto the letter keys and accessed by holding a modifier — usually a dedicated 'layer' or 'function' key held by a thumb. Hold it, and your right hand's letters might become a number pad; release it, and they're letters again.
This is genuinely clever. Everything stays within the home region, so in theory your fingers never leave their comfortable resting area to reach a distant number row. A well-designed 40% layout keeps the most common symbols one comfortable hold away. The catch is that all of this has to be learned and memorized — the layers aren't printed intuitively, and you're essentially learning a new input system on top of typing. That memorization is the price of admission, and it's steep enough that many people bounce off before it pays back.
The Case For: Speed and Ergonomics
The pro-40% argument is real. Because every key sits within a tiny footprint, your hands barely move — no stretching to a far number row, no traveling to arrow keys. For someone who has fully internalized the layers, that minimal movement can make typing feel remarkably efficient and low-strain. There's a genuine ergonomic logic to keeping everything under the home row.
The compactness is also a practical win: a 40% board is wonderfully portable and frees up desk space, and it lets you keep your mouse closer, which reduces shoulder reach. Enthusiasts often pair the small size with ergonomic layouts. If you've read my take on how keyboard size affects typing, a 40% is the logical extreme of that 'smaller means less movement' philosophy. For a committed hobbyist willing to climb the learning curve, the payoff is a fast, compact, low-travel setup that some people swear by and never leave. Many 40% users pair the tiny footprint with an ergonomic setup, since keeping everything close to the home row is the same principle that drives ergonomic typing in the first place. The underlying keyboard technology is identical to any other board — only the key count and layers change.
The Case Against: The Learning Curve
Now the honest downside. Learning a 40% board is not a weekend project — it's weeks of feeling slow and frustrated as you memorize layers and retrain reflexes. Numbers and symbols, which you previously hit directly, now require a held modifier and a memorized position, and until that's automatic, anything data-heavy or code-heavy slows to a crawl. For a lot of people, that friction never fully disappears.
There's also a real productivity cost during the transition. If you type for a living, deliberately tanking your speed for weeks to learn a tiny keyboard is a hard sell unless you genuinely enjoy the hobby. And some tasks — spreadsheets, numeric data entry, heavy symbol work — remain permanently a bit slower on layers than on a board with dedicated keys. The 40% asks you to trade immediate, guaranteed convenience for a delayed, uncertain payoff. That's a trade plenty of practical typists rightly decline.
Who Should Actually Use One
A 40% keyboard makes sense for a specific kind of person. If you're a keyboard hobbyist who enjoys tinkering, customizing layouts, and the craft of optimizing your setup, a 40% is a rewarding rabbit hole and you'll likely love it. If you primarily type prose and code with a layout you've tuned to put your symbols exactly where you want them, it can become a genuinely fast daily driver.
It makes far less sense if you want to buy a keyboard and be instantly productive, if your work is heavy on numbers or spreadsheets, or if you have zero patience for a multi-week learning curve. There's no shame in that — most people are better served by a 60% or TKL that keeps the essentials as physical keys. The 40% is a specialist tool, not a universal upgrade. Match it to your temperament and workload honestly, and you'll know quickly if you are in its target audience or not.
Does It Actually Make You Faster?
Here's thecentral question stripped bare: a 40% keyboard will not make you type prose faster than you already do on a normal board — at best it matches your speed once mastered. The letters are the same letters in the same places; there's no magic that accelerates them. Where it can help is in reduced hand travel and, for enthusiasts, a more comfortable, focused typing experience that supports sustained speed.
But for numbers and symbols, a 40% is, realistically, slower than a board with dedicated keys, at least for most users, because a held layer will rarely beat a direct press. So if raw speed across all content is your only goal, a 40% is not the tool — a well-fitted larger board is simpler and just as fast. The 40% is chosen for compactness, ergonomics, and the joy of the craft, with typing speed being, at best, a break-even. Anyone selling it as a speed hack is overpromising.
If You Want to Try One
Curious despite the caveats? Go in with the right expectations and a plan. Accept up front that you'll be slow for a few weeks and don't judge the board by your first frustrating days. Start by drilling just the base letter layer until it's comfortable, then add one layer at a time — numbers first, then symbols — rather than trying to memorize everything at once. Piecemeal learning sticks better than an overwhelming all-at-once approach.
Spend real time customizing the layout to put your most-used symbols in the most comfortable holds; the default layers are a starting point, not gospel, and tuning them to your workflow is half the appeal. Keep a normal keyboard around for deadline days during the transition so you're not sacrificing real work to the learning curve. Give it a genuine month before deciding. Plenty of people who pushed through that month became devoted 40% users — and plenty tried it, learned a lot, and happily went back to a bigger board. Both outcomes are fine.
The Verdict
So, are 40% keyboards worth it for typing speed? For the enthusiast willing to invest weeks of learning, they can be a fast, compact, ergonomic delight that matches your prose speed while shrinking your footprint. For everyone else chasing a quick speed win, they're more novelty than upgrade, and a 60% or TKL will get you typing fast with none of the learning tax.
My bottom line: choose a 40% for the craft, the compactness, and the ergonomics — not because you expect it to raise your WPM, because it won't beyond what you already have. Typing speed lives in your fingers and technique, and a tiny keyboard doesn't change that. If the hobby appeals to you, dive in with patience and enjoy it. If you just want to type fast today, there are simpler roads to that goal, and no shame in taking them.
Frequently Asked Questions
What is a 40% keyboard?
A 40% keyboard is a very compact board that removes the number row, function row, and often arrow and dedicated symbol keys, leaving roughly the letters and a few modifiers. Missing functions are accessed through layers — holding a function key temporarily turns letter keys into numbers or symbols.
Are 40% keyboards good for typing speed?
For pure prose typing, a well-learned 40% can match your normal speed since the letters are unchanged, but it won't make you faster. Numbers and symbols are typically slower because they require held layers instead of direct presses. It's chosen for compactness and ergonomics, not a speed boost.
Is a 40% keyboard hard to learn?
Yes, expect a few weeks of feeling slow while you memorize the layers and retrain reflexes. Numbers and symbols that you previously hit directly now need a held modifier and a memorized position. Many practical typists find the learning curve isn't worth it for their workload.
Who should use a 40% keyboard?
Keyboard hobbyists who enjoy tinkering and customizing layouts, and people who mainly type prose or code with a tuned layout. It makes less sense if you want instant productivity, do heavy numeric or spreadsheet work, or lack patience for a multi-week learning curve. A [60% or TKL](/blog/60-percent-vs-tkl-vs-full-size-keyboard-typing-speed) suits most people better.
Does a smaller keyboard actually make you type faster?
No. A 40% keyboard doesn't accelerate your letters, which are in the same places as on any board — at best it matches your existing prose speed once mastered. Its benefits are reduced hand travel, compactness, and ergonomics, not raw typing speed. Anyone marketing it as a speed hack is overpromising.
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