The wrong stool height makes a kitchen island uncomfortable: knees hit the counter, or feet dangle and elbows rest too low. This calculator gives the right seat height and how many stools fit.
Seat height
Leave about 10 to 12 in between the seat and the underside or top of the counter:
| Surface | Surface height | Stool seat height |
|---|---|---|
| Dining table | 28 to 30 in | 18 to 20 in (chair) |
| Kitchen counter | 36 in | 24 to 26 in (“counter height”) |
| Bar | 40 to 42 in | 28 to 32 in (“bar height”) |
| Extra-tall bar | 44 to 47 in | 33 to 36 in (“spectator”) |
Measure your counter from the floor to the top. If there is a thick apron or drawer under the counter, measure to the bottom of it and leave at least 7 in of thigh room.
How many stools fit
Allow about 24 in per stool for 16 to 18 in stools, 26 to 28 in for wider stools, and 28 to 30 in for stools with arms or that swivel. That leaves about 6 in between stools, enough to get on and off without bumping elbows.
stools = seating length ÷ (stool width + space between)
An 8 ft island (96 in) with 18 in stools and 6 in gaps seats 4.
Knee space
The counter must overhang enough for knees:
- 15 in at a 36 in counter;
- 12 in at a 42 in bar;
- 18 in at table height.
These figures come from widely used kitchen planning guidelines. Overhangs beyond about 10 to 12 in usually need brackets or corbels under the countertop.
Clearance behind the stools
Leave at least 36 in behind the seated diners to a wall or obstruction, and 44 in or more if people need to walk behind them, so traffic can pass.
Choosing a style
Backless stools tuck fully under the counter and keep sight lines open. Stools with backs are more comfortable for long meals, and footrests help shorter people and children. Adjustable stools suit households with different heights.