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65
Keychron K3 Ultra-slim Wireless Mechanical Keyboard FR-ISO Layout

Keychron K3 Mechanical Keyboard

The Keychron K3 is a compact, low profile mechanical keyboard designed for users who want a slim, portable option with versatile connectivity. It suits office workers, students, and hobbyists who value a smaller footprint and the ability to customize switches without soldering. Its wireless and wired modes support multi-device use, making it practical for those who switch between computers or mobile devices.</p... Read more
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Keychron K3 Ultra-slim Wireless Mechanical Keyboard FR-ISO Layout

Keychron (DE)
Keychron (DE)
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Compare Keychron K3 vs Keychron K3 Pro vs Keychron K3 Max Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron K3Keychron K3 ProKeychron K3 Max
65
Keychron K3 Ultra-slim Wireless Mechanical Keyboard FR-ISO Layout
87
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection
94
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
0.0 (0)
4.7 (52)
4.7 (9)
  • Built with the ISO-FR, ISO, ANSI layout standard
  • Supports Bluetooth, Wired, Wireless connectivity
  • Made with a Aluminum, ABS case
  • Offers Yes, Rgb, White, North-face, Rgb North-face RGB lighting
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • 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
  • Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Weighs about 580 g
  • Sized at 22 x 306 x 116 mm
  • Made with a ABS, Aluminum, Wood, Plastic case
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 62.8
  • Build Quality: 61.7
  • Productivity: 66.7
  • Customizability: 69.5
  • Portability: 78.2
Scores
  • Performance: 81
  • Build Quality: 81.3
  • Productivity: 79.8
  • Customizability: 89
  • Portability: 77.2
Scores
  • Performance: 80.9
  • Build Quality: 86.4
  • Productivity: 94.3
  • Customizability: 92.2
  • Portability: 77.2
Name
Keychron K3
Name
Keychron K3 Pro
Name
Keychron K3 Max
Release year
2023
Release year
2022
Release year
2023
Switch Options
Tactile, Linear, Clicky
Switch Options
Linear, Tactile, Clicky
Switch Options
Tactile, Linear, Clicky
Profile
Low Profile
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Size
75%
Layout Standard
ISO-FR, ISO, ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI
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, 2.4 GHz, Wired, Wireless
Polling Rate
-
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1550 mAh
Battery capacity
1550 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
Tray Mount
Mount Style
Plate Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face, White, North-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Colors
Case Material
Aluminum, ABS
Case Material
Aluminum, Plastic, ABS
Case Material
ABS, Aluminum, Wood, Plastic
Keycaps Material
PBT, ABS
Keycaps Material
ABS, PBT
Keycaps Material
PBT, ABS
Dimensions
-
Dimensions
15 x 306 x 116 mm
Dimensions
22 x 306 x 116 mm
Weight
-
Weight
930g
Weight
580g
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Product Description

The Keychron K3 is a compact, low profile mechanical keyboard designed for users who want a slim, portable option with versatile connectivity. It suits office workers, students, and hobbyists who value a smaller footprint and the ability to customize switches without soldering. Its wireless and wired modes support multi-device use, making it practical for those who switch between computers or mobile devices.

Key Features

  • Ultra low profile design reduces desk clutter and improves typing posture with adjustable feet at 6 or 9 degrees.
  • Hot-swappable low profile optical switches allow easy customization of typing feel without technical skills.
  • Compact 75% layout retains essential keys while saving space compared to full-size keyboards.
  • Bluetooth 5.1 supports connection to up to three devices, enabling seamless switching between them.
  • Includes Mac multimedia keys and compatibility with Windows, Android, Mac, iOS, and Linux for broad OS support.

Build Quality

  • Aluminum top case offers a sturdy and stable base, contributing to durability and a premium feel.
  • Plate-mounted switches improve key stability and reduce wobble during typing.
  • ABS keycaps with laser-engraved legends provide clear visibility but may wear faster than other materials.

Typing Experience

  • Low profile optical switches deliver a quieter, lighter keypress compared to traditional mechanical switches.
  • Hot-swappable design lets users experiment with different switch types to find preferred sound and feel.
  • Adjustable typing angles help reduce wrist strain during extended use.

Connectivity

  • USB-C wired connection offers stable, low-latency input for gaming or focused work sessions.
  • Bluetooth 5.1 enables wireless use with multiple devices, ideal for mobile setups or reducing cable clutter.
  • Supports connection to three devices simultaneously, simplifying multi-device workflows.

Trade-offs

  • Compact 75% layout omits dedicated function row and navigation cluster, which may slow workflows reliant on those keys.
  • ABS keycaps are less durable and may develop shine over time compared to PBT alternatives.
  • No built-in audio or microphone ports limits direct peripheral connectivity.
  • Unknown battery life and wireless latency details may be a concern for users needing precise performance data.

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