Keychron K3 Max vs K5 Max75% vs Full-Size Low Profile
Choose the K3 Max if you need a compact, travel-friendly layout or the K5 Max if a full number pad is essential for your workflow.
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4.1 (16)4.1 · 16 reviews
from$89at MK
4.1 (16)4.1 · 16 reviews
from$94at Keychron
Which one should you get?
Get the
Keychron K3 Max
75%
Build quality in the top 5% of 75% boards under $100.
- Compact 75% layout with 84 keys saves desk space.
- Lighter at 580g and smaller footprint (306mm wide) for easy transport.
- Screw-in stabilizers for improved key stability on larger keys.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- No numpad.
Get the
Keychron K5 Max
Full-Size Low Profile
Build quality in the top 15% of 100% boards under $100.
- Full 100% layout with 108 keys including a dedicated number pad.
- Larger 2000mAh battery for extended wireless use.
- Wider range of layout standards available including ISO-DE and ISO-Nordic.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Missing ISO-SW. The other board is sold in those layouts.
If desk space and portability are your top concerns the Keychron K3 Max is the better fit with its compact 75% layout and lighter build. If you rely on a number pad for work or prefer longer battery life the Keychron K5 Max full-size layout justifies the extra weight and size. Both deliver the same wireless performance and customizability so your choice should rest on layout preference.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron K3 Max
Keychron K5 Max
Layout size
75%
100%
Battery
1,550 mAh
2,000 mAh
A larger battery means fewer cables during the day
Case material
ABS, Aluminum, Plastic, Wood
ABS, Aluminum
Mount style
Plate Mount
PCB Mount, Plate Mount
Weight
580 g
720 g
Heavier boards stay planted and lighter ones travel
- Keychron K3 Max
- Keychron K5 Max
- Performance
- 8181
- Build quality
- 8681
- Productivity
- 9489
- Customizability
- 9188
- Portability
- 7753
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- QMK
What will you mostly use it for?
The K3 Max wins for gaming and travel due to its compact 75% size and lighter weight, making it easier to move and freeing desk space. The K5 Max leads for office and content creation tasks where a full number pad and larger battery improve efficiency. For programming and modding, both keyboards are evenly matched because they share the same QMK/VIA programmability, hot-swap capability, and acoustic foam features.
Pick the Keychron K3 Max
- 75% layout saves desk space for mouse movement.
- Lighter weight (580g vs 720g) makes it easier to bring to LAN events.
- Both share the same 1000 Hz polling rate on 2.4 GHz and wired modes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Max
16 owner reviews
“Noce keyboard, i appreciate the level of customization QMK provides. One thing was little disappointing - the tactile feeling comparing to K3. Other than that its very good kb!”
“I sold my k3 pro and got this. The one I got drops connection intermittently or doesn't type or respond right away. It sounds nice, but stiff reds are not as pleasant to type on as previous keyboards reds. I really thought I ordered hotswap RGB max but seems…”
Keychron K5 Max
16 owner reviews
“This is by far the best keyboard I've ever had. I did my research with AI defined the one I should get. I'm glad I did this first! I type about a hundred words a minute and do a lot of document creation as well as coding. This keyboard keeps up with me in the…”
“The printing quality of the Hungarian keycaps is very poor. The stroke thickness of the letters varies even within a single keycap—one letter is thick while another is thin. They look ugly. Also, on the internet the "esc" key appears orange, but in reality it…”
Keychron K3 Max vs K5 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 27 specs differ
Keychron K3 Max
Keychron K5 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K3 Max
Input Gear
ISO-DE
Out of stockShips to you
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you
Keychron K5 Max
Keychron
ISO-DE, ISO-UK, ISO-Nordic
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Keychron K3 Max vs K5 Max: your questions
No, the K3 Max uses a 75% layout with 84 keys and does not include a dedicated number pad. For a full number pad you would need the K5 Max which has 108 keys in a 100% layout.
Yes, both the K3 Max and K5 Max support 2.4 GHz wireless, Bluetooth, and wired connections. They offer a 1000 Hz polling rate on 2.4 GHz and wired modes for low latency.
Yes, hot-swappable versions are available for both keyboards. They are compatible with Gateron and Keychron low-profile mechanical switches but do not support low-profile optical switches.
Both the K3 Max and K5 Max come with keycaps for macOS and Windows and include additional esc and enter keys. They can be configured with different keymaps for each operating system via the Keychron Launcher.
The K3 Max has a 1550mAh battery while the K5 Max has a larger 2000mAh battery. The K5 Max may offer longer runtime between charges depending on usage.
Both keyboards support QMK firmware and the Keychron Launcher web app for remapping keys and creating macros. No separate software download is needed as Launcher works in Chrome, Opera, or Edge browsers.
The K3 Max is lighter at 580g and has a smaller footprint (306mm wide) compared to the K5 Max which weighs 720g and is 424mm wide. The K3 Max is better suited for travel.
According to user reports, the K5 Max keycaps are not shine-through, which can make them difficult to see in dark environments. The K3 Max also uses non-backlight shine-through PBT keycaps based on the vendor description.
The K3 Max offers three adjustable typing angles including 7 degrees and 3 degrees. The K5 Max also offers three levels of adjustable typing angle for ergonomic wrist support.
Yes, both the K3 Max and K5 Max include interior IXPE acoustic foam and resilient latex foam to reduce keystroke noise and improve typing comfort according to the vendor description.
The K5 Max is available in ANSI and several ISO layouts including ISO-DE, ISO-Nordic, ISO-UK, and ISO. This gives more regional layout choices compared to the K3 Max.
Based on user reviews, the K3 Max does not have a built-in storage slot for the 2.4 GHz dongle. Neither vendor description mentions a storage slot for the K5 Max either.
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