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Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3

Keychron K3 QMK V3 Mechanical Keyboard

The Keychron K3 QMK V3 is a low-profile 75% mechanical keyboard designed for users who want a compact layout with versatile connectivity and extensive customization. It suits professionals or hobbyists who value a slim design, programmable keys, and the ability to switch easily between Windows and macOS layouts. Its wireless and wired modes make it flexible for different work environments.</p... Read more
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Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3

Keychron (DE)
Keychron (DE)
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$120
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Compare Keychron K3 QMK V3 vs Keychron K1 V6 vs Keychron K3 V3 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron K3 QMK V3Keychron K1 V6Keychron K3 V3
77
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
84
Keychron K1 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 6
83
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
0.0 (0)
5.0 (2)
0.0 (0)
  • Has Tactile, Linear switch options
  • Built with the ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI layout standard
  • Uses a Plate Mount mounting style
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
  • Available in a 80% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic, ANSI layout standard
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Equipped with a 2000 mAh battery
  • Weighs about 596 g
  • Sized at 25 x 346 x 119 mm
  • Offers Yes, Rgb, North-face, Rgb North-face, White RGB lighting
  • Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic layout standard
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 84.6
  • Build Quality: 71.2
  • Productivity: 74.1
  • Customizability: 79.2
  • Portability: 77.7
Scores
  • Performance: 85.5
  • Build Quality: 78.4
  • Productivity: 80.2
  • Customizability: 89.7
  • Portability: 73.3
Scores
  • Performance: 81.9
  • Build Quality: 81.8
  • Productivity: 70.4
  • Customizability: 90
  • Portability: 74.7
Name
Keychron K3 QMK V3
Name
Keychron K1 V6
Name
Keychron K3 V3
Release year
2024
Release year
2024
Release year
2024
Switch Options
Tactile, Linear
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Low Profile
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
80%
Layout Size
75%
Layout Standard
ISO, ISO-DE, ISO-Nordic, ISO-UK, ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic, ANSI
Layout Standard
ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Bluetooth, Wired, Wireless
Connection
Bluetooth, Wired, Wireless, 2.4 GHz
Connection
Bluetooth, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1550 mAh
Battery capacity
2000 mAh
Battery capacity
1550 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Plate Mount
Mount Style
Top Mount
Mount Style
Top Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, North-face
Backlight
 
Rgb, North-face, White
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Colors
Case Material
ABS, Aluminum
Case Material
ABS, Aluminum
Case Material
ABS, Aluminum
Keycaps Material
ABS
Keycaps Material
ABS
Keycaps Material
PBT, ABS
Dimensions
19 x 306 x 116 mm
Dimensions
25 x 346 x 119 mm
Dimensions
19 x 306 x 116 mm
Weight
540g
Weight
596g
Weight
540g
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Product Description

The Keychron K3 QMK V3 is a low-profile 75% mechanical keyboard designed for users who want a compact layout with versatile connectivity and extensive customization. It suits professionals or hobbyists who value a slim design, programmable keys, and the ability to switch easily between Windows and macOS layouts. Its wireless and wired modes make it flexible for different work environments.

Key Features

  • 75% layout saves desk space while retaining essential keys for productivity.
  • Hot-swappable sockets support low-profile Gateron and Keychron switches, allowing easy switch replacement without soldering.
  • Programmable keys and macros via QMK firmware and Keychron Launcher enable personalized workflows.
  • North-facing RGB LEDs with multiple lighting options provide customizable backlighting without interfering with keycap legends.
  • Three adjustable typing angles (2.5º, 4.2º, 6.5º) improve ergonomics for different preferences.
  • Easy toggle switch to switch between Windows and macOS layouts, supporting personalized keymaps for each OS.

Build Quality

  • Aluminum top frame combined with ABS bottom offers a balance of durability and lightweight design.
  • Plate-mounted switches enhance typing stability and reduce wobble.
  • Includes a multi-layer acoustic foam package (IXPE, PET film, EPDM, latex foam) to reduce typing noise and improve sound quality.
  • LSA profile ABS keycaps provide a low-profile typing surface with clear double-shot legends for durability.

Connectivity

  • Supports wired connection via USB-C for stable, low-latency input at 1000 Hz polling rate.
  • Bluetooth 5.2 wireless mode allows connection to up to three devices with a 90 Hz polling rate, suitable for general use but less ideal for fast-paced gaming.
  • 1550 mAh rechargeable battery supports wireless use, but exact battery life is unknown.

Compatibility and Customization

  • ANSI US QWERTY layout with 84 keys fits most users needing a compact but familiar setup.
  • Compatible with Windows, macOS, and Linux, making it versatile across operating systems.
  • QMK firmware support allows deep customization of key functions and macros beyond standard software.

Trade-offs

  • Low-profile design and ABS keycaps may feel less substantial compared to full-height or PBT keycaps preferred by some typists.
  • Wireless polling rate at 90 Hz is lower than wired mode, which may impact responsiveness in competitive gaming.
  • Limited to ANSI layout, which may not suit users requiring ISO or other regional layouts.
  • Battery life details are not provided, so wireless endurance is uncertain.

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