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

Compare Keychron J4 QMK vs K3 Pro Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron J4 QMK and Keychron K3 Pro 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.

72
Keychron J4 QMK Wireless Mechanical Keyboard (US ANSI Layout)
87
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection

Select a keyboard to compare

0.0 (0)
4.6 (54)
  • Released in 2025
  • Has Tactile, Linear switch options
  • Available in a 80% layout
  • Built with the ANSI layout standard
  • Has built-in sound dampening
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 3750 mAh battery
  • Weighs about 870 g
  • Sized at 38 x 366 x 138 mm
  • Made with a ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Features a low-profile design
  • Available in a 75% layout
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard
  • Provides dedicated media keys
  • Supports VIA configuration
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Equipped with a 1550 mAh battery
  • Weighs about 930 g
  • Sized at 15 x 306 x 116 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 79.2
  • Build Quality: 60.9
  • Productivity: 84.4
  • Customizability: 74.3
  • Portability: 73.8
Scores
  • Performance: 80.8
  • Build Quality: 81.3
  • Productivity: 79.9
  • Customizability: 88.9
  • Portability: 77.3
Name
Keychron J4 QMK
Name
Keychron K3 Pro
Release year
2025
Release year
2022
Switch Options
Tactile, Linear
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
80%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, 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, Wired, Wireless, 2.4 GHz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
3750 mAh
Battery capacity
1550 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
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face, White, North-face
Case Colors
Case Colors
Case Material
ABS
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
ABS, PBT
Dimensions
38 x 366 x 138 mm
Dimensions
15 x 306 x 116 mm
Weight
870g
Weight
930g
*Something incorrect or missing? Please
let me know
!

Discover similar products

You might also like similar products in that price range:

100
$104
Lemokey P1 QMK/VIA Custom Gaming Keyboard
Keychron P1
75%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
VIA,
QMK,
Alu case,
Gasket Mount

83
$94
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
Keychron K3 V3
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Top Mount

94
$94
Keychron V3 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron V3 Max
80%,
Hotswap,
Wireless,
Wired,
RGB,
Knob,
VIA,
QMK,
Gasket Mount

94
$84
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K3 Max
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Plate Mount

92
$114
Keychron V3 Ultra 8K Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron V3 Ultra
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Knob,
VIA,
QMK,
Gasket Mount

67
$96
Keychron K3 Ultra-slim Wireless Mechanical Keyboard (Version 2)
Keychron K3 V2
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Alu case,
Tray Mount

92
$95
Keychron K2 Max QMK Wireless Mechanical Keyboard ISO Layout Collection
Keychron K2 Max
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
PCB Mount

86
$67
Keychron K1 Pro QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K1 Pro
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

92
$94
Keychron K8 Max QMK Wireless Mechanical Keyboard ISO Layout Collection
Keychron K8 Max
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
PCB Mount

88
$69
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