Keychron B1 Pro vs B5 ProCompact or Full-Size
Get the B1 Pro for its 75% low-profile design and listed ISO and JIS layouts, or the B5 Pro for its 100% layout and larger 1200mAh battery.
KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
4.4 (7)4.4 · 7 reviews
from$37at MK
No reviews
from$39at Keychron
Which one should you get?
Get the
Keychron B1 Pro
Build quality in the bottom 5% of 75% boards under $50.
- 75% low-profile design with a listed weight of 425g.
- ANSI, ISO, and JIS layout standards are listed.
- Low-profile switches and keycaps provide a specifically identified low-profile format.
- Switches are soldered. Swapping them means soldering.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- No numpad.
Get the
Keychron B5 Pro
Battery
Build quality in the bottom 5% of 100% boards under $100.
- 100% layout includes a numpad.
- 1200mAh battery capacity.
- ANSI layout is listed.
- Switches are soldered. Swapping them means soldering.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
Choose the B1 Pro for a lighter, low-profile 75% keyboard and the listed ISO and JIS layout options. Choose the B5 Pro for a full-size 100% layout with a numpad and a larger 1200mAh battery. Both have soldered switches, so neither is a straightforward choice for solder-free switch swaps.
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 B1 Pro
Keychron B5 Pro
Layout size
75%
100%
Battery
800 mAh
1,200 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Case material
ABS, Plastic
ABS
Weight
425 g
623 g
Heavier boards stay planted and lighter ones travel
- Keychron B1 Pro
- Keychron B5 Pro
- Performance
- 5050
- Build quality
- 4243
- Productivity
- 6970
- Customizability
- 4648
- Portability
- 7852
- Connection: Bluetooth, 2.4 GHz, Wired
- Max polling rate: 1,000 Hz
- Switch options: Clicky, Linear, Tactile
- Keycaps: ABS
What will you mostly use it for?
The B1 Pro is the more portable choice, with a lower listed weight, a narrower body, and low-profile construction. The B5 Pro has the practical edge when a full-size layout or numpad matters, and its listed battery capacity is larger. Gaming is a close match on the listed polling rate and connectivity. For modding, both require soldering for switch changes, and the B1 Pro also limits compatible switches and keycaps to low-profile types.
It's a tie
- Both list a 1000 Hz polling rate and 2.4 GHz connectivity.
- Both list linear, tactile, and clicky switch types.
- The metadata does not identify a gaming-specific feature that separates them.
Keychron B1 Pro vs B5 Pro specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 19 specs differ
Keychron B1 Pro
Keychron B5 Pro
Switch options
Low profile
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Keycaps
Weight
Dimensions
Typing angle
Backlight
Mac & Windows
Released
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.
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron B1 Pro
- Go to Keychron
Keychron
ISO
In stockShips to you
- Go to Keychron (DE)
Keychron (DE)
ISO
In stockDoes not ship to you
Keychron B5 Pro
No ISO layout at the stores we track.
Keychron B1 Pro vs B5 Pro: your questions
The B1 Pro is a 75% low-profile keyboard that weighs 425g, while the B5 Pro is a 100% keyboard that weighs 623g. The B5 Pro also lists a 1200mAh battery, compared with 800mAh for the B1 Pro.
Yes. Its listed 100% layout includes a numpad, unlike the B1 Pro's 75% layout.
The B1 Pro weighs 425g and has a listed width of 296mm, making it the smaller and lighter option in this comparison. Its metadata also identifies it as low profile.
The B1 Pro metadata lists ANSI, ISO, and JIS layout standards. The B5 Pro is listed as ANSI only, and its compatibility rules exclude ISO variants.
Both keyboards have soldered switches, so replacing switches requires soldering. The B1 Pro specifically uses low-profile switches, and the listed compatibility rules say standard MX keycaps will not fit.
The B5 Pro lists a 1200mAh battery, while the B1 Pro lists an 800mAh battery. Capacity alone does not establish how long either keyboard will last between charges.
Both list Bluetooth and 2.4 GHz connectivity, along with a wired connection. Their metadata also describes both as wireless keyboards.
The B5 Pro may suit programming workflows that use a numpad, because it has a 100% layout. The B1 Pro is a 75% board and has no numpad.
Neither keyboard lists RGB lighting in its metadata. Both are listed as having no RGB.
Both product metadata entries list Mac/Win support. Each also lists USB-C and multimedia keys.
The B1 Pro is listed at 5 x 296 x 130mm, while the B5 Pro is 10 x 438 x 121mm. The B1 Pro also weighs less, at 425g compared with the B5 Pro's 623g.
The B5 Pro compatibility rules say ISO layouts, including ISO-DE and UK variants, are not offered. Its listed layout standard is ANSI.
Not sold on either?
![[In Stock] EK8870 100% Full Size Wireless Computer Keyboard & Mouse Combo](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/51bed95f989b2270790ebc059a3d34e6.jpg?v=1746693763&width=3840&quality=75)
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.