KeebFinder
Not sure which keyboard to choose? Try the Keyboard Finder now!

Compare Keychron J5 QMK vs K4 Max Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron J5 QMK and Keychron K4 Max and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

73
Keychron J5 QMK Wireless Mechanical Keyboard (US ANSI Layout)
87
Keychron K4 Max QMK Wireless Mechanical Keyboard ISO Layout Collection

Select a keyboard to compare

0.0 (0)
5.0 (1)
  • Has Tactile, Linear switch options
  • Available in a 100% layout
  • Built with the ANSI layout standard
  • Connects via USB-C
  • Equipped with a 3750 mAh battery
  • Weighs about 1100 g
  • Sized at 35 x 436 x 129 mm
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Has Linear, Tactile, Clicky switch options
  • Available in a 96% layout
  • Built with the ISO, ANSI layout standard
  • Provides dedicated media keys
  • Supports VIA configuration
  • Includes screw-in stabilizers
  • Uses a PCB Mount mounting style
  • Equipped with a 4000 mAh battery
  • Weighs about 1290 g
  • Sized at 31 x 391 x 140 mm
  • Offers Yes, Rgb, South-face, Rgb South-face, White, White South-face RGB lighting
Scores
  • Performance: 78.1
  • Build Quality: 61.2
  • Productivity: 84.1
  • Customizability: 75
  • Portability: 56.3
Scores
  • Performance: 82
  • Build Quality: 80.5
  • Productivity: 89.6
  • Customizability: 92.9
  • Portability: 50.7
Name
Keychron J5 QMK
Name
Keychron K4 Max
Release year
2025
Release year
2025
Switch Options
Tactile, Linear
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
96%
Layout Standard
ANSI
Layout Standard
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
3750 mAh
Battery capacity
4000 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
-
Mount Style
PCB Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face, White, White South-face
Case Colors
Case Colors
Case Material
ABS
Case Material
ABS
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
35 x 436 x 129 mm
Dimensions
31 x 391 x 140 mm
Weight
1100g
Weight
1290g
*Something incorrect or missing? Please
let me know
!

Discover similar products

You might also like similar products in that price range:

72
$115
Keychron K5 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 2
Keychron K5 V2
100%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
QMK,
Alu case

91
$94
Keychron K4 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
Keychron K4 V3
96%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Tray Mount

98
$99
Keychron V5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron V5 Max
96%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
VIA,
QMK,
Gasket Mount

92
$69
Keychron K4 Pro QMK/VIA Wireless Mechanical Keyboard
Keychron K4 Pro
96%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Tray Mount

96
$89
Keychron V6 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron V6 Max
100%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
VIA,
QMK,
Gasket Mount

88
$94
Keychron K17 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K17 Max
96%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Knob,
VIA,
QMK,
Alu case,
PCB Mount

94
$94
Keychron K10 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 2
Keychron K10 V2
100%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

88
$87
Keychron K5 Pro QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K5 Pro
100%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

91
$118
Keychron K4 HE Wireless Magnetic Switch Custom Keyboard ISO Layout Collection
Keychron K4 HE
96%,
Hotswap,
Wireless,
Wired,
RGB,
VIA,
QMK,
HE,
Rapid trigger,
Alu case,
Tray Mount

89
$99
Keychron K10 Max QMK Wireless Mechanical Keyboard ISO Layout Collection
Keychron K10 Max
100%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
PCB Mount