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Compare Keychron K3 Max vs K5 Max Differences Side by Side

This comparison is for buyers deciding between Keychron's ultra-slim K3 Max and K5 Max. Both are low-profile wireless keyboards with hot-swappable switches, QMK/VIA support, and a 1000 Hz polling rate on 2.4 GHz. The main decision hinges on layout: the K3 Max offers a space-saving 75% design (84 keys) while the K5 Max provides a full 100% layout (108 keys) with a dedicated number pad. The trade-off involves portability versus productivity features, as the K5 Max is heavier and larger but includes more keys out of the box.

94
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
86
Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection

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4.7 (9)
3.9 (22)
  • Released in 2023
  • Available in a 75% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard
  • Includes screw-in stabilizers
  • Uses a Plate Mount mounting style
  • Equipped with a 1550 mAh battery
  • Weighs about 580 g
  • Sized at 22 x 306 x 116 mm
  • Made with a ABS, Aluminum, Wood, Plastic case
  • Released in 2024
  • Available in a 100% layout
  • Built with the ISO-DE, ISO-Nordic, ISO-UK, ISO, ANSI layout standard
  • Uses a PCB Mount mounting style
  • Equipped with a 2000 mAh battery
  • Weighs about 720 g
  • Sized at 18 x 424 x 119 mm
  • Made with a ABS, Aluminum case
Scores
  • Performance: 81.1
  • Build Quality: 86.5
  • Productivity: 94.4
  • Customizability: 92.4
  • Portability: 77.2
Scores
  • Performance: 82.4
  • Build Quality: 82
  • Productivity: 89.7
  • Customizability: 90.3
  • Portability: 54.7
Name
Keychron K3 Max
Name
Keychron K5 Max
Release year
2023
Release year
2024
Switch Options
Tactile, Linear, Clicky
Switch Options
Tactile, Linear, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
100%
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI
Layout Standard
ISO-DE, ISO-Nordic, ISO-UK, ISO, ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1550 mAh
Battery capacity
2000 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Plate Mount
Mount Style
PCB Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
ABS, Aluminum, Wood, Plastic
Case Material
ABS, Aluminum
Keycaps Material
PBT, ABS
Keycaps Material
PBT, ABS
Dimensions
22 x 306 x 116 mm
Dimensions
18 x 424 x 119 mm
Weight
580g
Weight
720g
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Pros and Trade-offs

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.

Keychron K3 Max

  • +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.
  • +Includes extra foam inside the spacebar according to user reports.
  • +Offers three typing angle options (7 degrees and 3 degrees).
  • −No dedicated number pad, may slow down data entry tasks.
  • −Smaller 1550mAh battery requires more frequent charging than the K5 Max.
  • −Compatibility limited to Gateron/Keychron low-profile mechanical switches only.

Keychron K5 Max

  • +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.
  • +QMK/VIA support for full key remapping and macros.
  • −Heavier at 720g and larger size (424mm wide) reduces portability.
  • −Some users report Bluetooth connectivity issues with older computers.
  • −Keycaps are not shine-through, making them hard to see in low light.
  • −Compatibility limited to Gateron/Keychron low-profile mechanical switches only.

Which Keyboard Is Better for Your Needs?

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.

GamingKeychron 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.
OfficeKeychron K5 Max
  • •Full 100% layout with a dedicated number pad speeds up data entry.
  • •Larger 2000mAh battery for longer wireless use between charges.
  • •Both include Mac/Win support, multimedia keys, and sound dampening foam.
ProgrammingTie
  • •Both support QMK and VIA for full key remapping and macro creation.
  • •Both have low-profile mechanical switches for comfortable extended typing.
  • •Both offer multiple layout options (ANSI and ISO) to suit regional preferences.
TravelKeychron K3 Max
  • •Compact 75% layout is smaller and fits more easily in bags.
  • •Lighter at 580g versus 720g for the K5 Max.
  • •Shorter width (306mm) compared to the full-size K5 Max (424mm).
ModdingTie
  • •Both have hot-swappable switch support for Gateron/Keychron low-profile switches.
  • •Both use low-profile double-shot PBT keycaps with good oil resistance.
  • •Screw-in stabilizers on the K3 Max and redesigned stabilizers on the K5 Max provide a solid base for customization.
  • •Both include IXPE acoustic foam and latex foam for sound dampening.
Content CreationKeychron K5 Max
  • •Full number pad is beneficial for video editing timelines and audio software shortcuts.
  • •More keys reduce reliance on function layers for frequent commands.
  • •Larger 2000mAh battery supports longer editing sessions without recharging.

Frequently Asked Questions (FAQ)

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