The quick answer
- 90cm kitchen island / breakfast bar → 65cm counter stool
- 105–115cm pub-height bar → 75–80cm bar stool
- 120cm+ commercial bar → 80cm bar stool or adjustable gas-lift
- Gap between seat and worktop: 25–30cm (10–12")
- Width per stool: 60cm minimum, 70–75cm for swivel or armed
Step 1 — Measure your worktop
Measure from the finished floor to the top of the worktop (not the underside). Almost every fitted UK kitchen lands within 1cm of 90cm, because that's the standard British carcass height (720mm cabinet + 150mm plinth + 38–40mm worktop).
If you're measuring a purpose-built home bar, a kitchen island raised on a higher plinth, or a poseur table, expect 105–115cm instead. Anything taller is commercial bar territory at 115–120cm.
Step 2 — Apply the 25–30cm gap rule
The right stool leaves 25–30cm (about 10–12 inches) between the top of the seat cushion and the underside of the worktop. That's the space your thighs need to slide in comfortably while your elbows still rest naturally on the counter.
So the maths is simply:
Worktop height − 25 to 30cm = ideal seat height
For a 90cm worktop, that puts the seat between 60cm and 65cm — and in practice 65cm is the sweet spot for most adults. For a 110cm bar, aim for 80–85cm seats.
Counter stool vs bar stool — which is which?
| Type | Seat height | Worktop it suits |
|---|---|---|
| Low / dressing stool | 45–55cm | Dining table (75cm) |
| Counter / breakfast bar stool | 63–68cm | 90cm UK kitchen island |
| Bar stool | 75–80cm | 105–115cm home bar |
| Tall / commercial bar stool | 80–85cm | 115–120cm pub bar |
Not sure which you need? Browse kitchen / breakfast bar stools (65cm) or true bar stools (75–80cm).
Step 3 — Allow enough width per seat
Most people get the height right and the width wrong. Use these minimums measured along the worktop edge:
- Backless stools: 50–60cm per seat
- Stools with backs: 60cm per seat
- Swivel stools: 70cm per seat (they need elbow-room to turn)
- Armed stools: 70–75cm per seat
So a typical 180cm island comfortably seats:
- 3 standard counter stools, or
- 2 swivel / armed stools with breathing room
When to choose adjustable gas-lift stools
If your worktop is non-standard, or you share the kitchen with both very tall and very short users (or kids who'll outgrow a fixed stool), a height-adjustable gas-lift stool solves the problem in one purchase. Most adjust from roughly 60cm up to 80cm, covering both counter and bar height.
Common mistakes to avoid
- Buying 75cm bar stools for a 90cm worktop. Your knees hit the counter — 65cm is what you need.
- Cramming four stools into a 180cm island. Allow 60cm each; three is the comfortable maximum.
- Forgetting the cushion height. A 65cm frame with a 5cm cushion sits at 70cm — measure to the top of the cushion.
- Ignoring footrests. Any seat over 60cm needs a footrest, or legs dangle and people stop using the stools.
Ready to choose?
Now you know the numbers, browse by height: 65cm counter / breakfast bar stools, 75–80cm bar stools, adjustable gas-lift stools, or filter by feature — stools with backs, swivel, with arms.
Still not sure? WhatsApp the team with your worktop height and island length and we'll recommend a stool and quantity.