Keychron K3 Pro vs K5 ProCompact 75% vs Full-Size Low-Profile
Choose the K3 Pro for a portable, space-saving layout or the K5 Pro if you require a dedicated number pad and full-size functionality.
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4.8 (52)4.8 · 52 reviews
from$67at Keychron
4.8 (8)4.8 · 8 reviews
from$135at Keychron (DE)
Which one should you get?
Get the
Keychron K3 Pro
Compact 75%
Build quality in the top 15% of 75% boards under $100.
- Compact 75% layout saves substantial desk space.
- Includes a 2.4 GHz wireless dongle option alongside Bluetooth.
- Heavier 930g build may contribute to a stable typing feel.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No numpad.
Get the
Keychron K5 Pro
Full-Size Low-Profile
Build quality in the top 15% of 100% boards under $150.
- Full 100% layout with integrated number pad.
- Larger 2000mAh battery capacity for extended wireless use.
- Specifically lists a 3-degree typing angle for ergonomics.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
Your desk space and need for a number pad are the deciding factors. The Keychron K3 Pro is the better portable and space-conscious option, also offering a 2.4GHz connection. The Keychron K5 Pro is the tool for full-size traditionalists, accountants, and anyone who relies heavily on a numpad, with the benefit of a larger battery.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron K3 Pro
Keychron K5 Pro
Layout size
75%
100%
Battery
1,550 mAh
2,000 mAh
A larger battery means fewer cables during the day
Mount style
Plate Mount, Tray Mount
Tray Mount
Weight
525 g
720 g
Heavier boards stay planted and lighter ones travel
Backlight
RGB, south-facing
RGB, north-facing
RGB for looks and low light rather than speed
- Keychron K3 Pro
- Keychron K5 Pro
- Performance
- 8279
- Build quality
- 8178
- Productivity
- 8082
- Customizability
- 8989
- Portability
- 7855
- Connection: Bluetooth, Wired
- Hot-swappable
- Low profile
- Max polling rate: 1,000 Hz
- Case material: ABS, Aluminum, Plastic
- Switch options: Clicky, Linear, Tactile
What will you mostly use it for?
The K5 Pro is the clear choice for office work and content creation where a number pad is essential. The K3 Pro wins for travel and gaming due to its space-saving design. For programming and modding, the keyboards are evenly matched on core technical features, leaving the decision to personal layout preference.
Pick the Keychron K3 Pro
- More compact 75% layout frees up mousepad space.
- Similar 1000Hz wired polling rate as the K5 Pro.
- Lighter weight (930g vs 720g) may be preferable for some setups.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Pro
52 owner reviews
“For anyone buying this, remember to toggle the switch to the correct operating system. Other than that, the feel is good and it comes with a good feature set for a low price”
Keychron K5 Pro
8 owner reviews
“I love my new keyboard! It's the typing experience I've been seeking.”
Keychron K3 Pro vs K5 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
7 of 25 specs differ
Keychron K3 Pro
Keychron K5 Pro
Switch options
Hot-swappable
Mount style
Low profile
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K3 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockDoes not ship to you
Keychron K5 Pro
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Lowest price across stores, Amazon excluded.
Keychron K3 Pro vs K5 Pro: your questions
The main difference is the layout size. The K3 Pro is a 75% compact keyboard, while the K5 Pro is a full-size 100% keyboard that includes a dedicated number pad. This fundamentally changes their desk footprint and suitability for different tasks.
Yes, both the K3 Pro and K5 Pro support a USB Type-C wired connection. Keychron states both offer a 1000 Hz polling rate in wired mode, which is suitable for gaming and low-latency tasks.
Yes, but only if you purchase the hot-swappable version of each model. Both keyboards offer hot-swappable variants, but they are only compatible with Gateron low-profile mechanical switches, not optical or standard MX-style switches.
Based on specifications, the K5 Pro has a larger 2000mAh battery compared to the K3 Pro's 1550mAh battery. This suggests the K5 Pro should last longer on a single charge under similar usage conditions.
Both keyboards come with low-profile double-shot PBT keycaps in their standard versions, according to their product descriptions. The K3 Pro also offers a Special Edition with dye-sublimated PBT keycaps.
The Keychron K3 Pro is significantly more portable. It has a 75% layout with a width of 306mm, compared to the K5 Pro's full-size 435mm width. The K3 Pro's compact form is much easier to transport and use in tight spaces.
Yes, both keyboards are fully compatible with macOS and Windows. They include keycaps for both operating systems and allow you to configure different keymaps for each within the Keychron Launcher or QMK/VIA software.
Both support Bluetooth 5.1 for connecting to up to three devices. The Keychron K3 Pro product page additionally lists a 2.4 GHz wireless option, which is not mentioned for the K5 Pro.
Yes, both keyboards support the open-source QMK firmware and the VIA configuration software. You can also use the Keychron Launcher web app to remap keys and create macros without flashing firmware.
The typing experience is very similar as both use the same Gateron low-profile switches, PBT keycap material, and redesigned stabilizers. The choice comes down to your preference for a compact layout (K3 Pro) or a full layout with more key spacing (K5 Pro).
Yes, both keyboards offer RGB backlighting versions with over 22 lighting effects. They also offer a white backlight-only version. The manufacturer notes the RGB lighting is north-facing on the K5 Pro.
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