Uni-ball One F vs One P: Which Pen Is Better?
Are you trying to choose between the Uni-ball One F and the Uni-ball One P, they use the same ink, but they feel completely different to write with.
So the real question isn’t “which is better?”
It’s which suits how you write.
What both pens do well
Both the Uni-ball One F Gel Pen and Uni-ball One P Gel Pen use Uni-ball’s pigment gel ink.
That gives you:
- Cleaner, sharper lines than standard gel pens
- Richer black ink (noticeably darker on paper)
- Minimal smudging, even on cheaper notebooks
- Consistent flow without skipping
- Both pens are refillable with UMR refills
Uni-ball One F: Better for control and long writing
The One F is designed to feel stable in your hand.
Key features:
- Lower centre of gravity
- Standard pen length
- Slim, minimal design
What that actually means:
You get more control. Your handwriting looks neater without trying.
If you’re writing for long periods, this is the better tool.
Best for:
- Students
- Journaling
- Planning and note-taking
- Anyone who cares about neat writing
Uni-ball One P: Better for portability and casual use
The One P is built to be small and easy to carry.
Key features:
- Short, pocket-sized body
- Chunkier grip
- Lightweight feel
- More playful design
What that actually means:
It’s comfortable and convenient, but less precise than the One F.
You’ll notice the difference if you’re writing a lot.
Best for:
- Pencil cases and handbags
- Quick notes
- Casual writing
- Gift buyers
Final verdict
The difference is simple:
- Uni-ball One F = control, balance, better for real writing
- Uni-ball One P = compact, convenient, more about design
Shop for :
Same ink, different experience.
Choose what fits how you write.