| Measurement | Typical figure | Notes |
|---|---|---|
| Counter-height island | 36" | Matches the rest of the counters |
| Bar-height island | 42" | Needs taller stools |
| Walkway around the island | 36" minimum | Where nobody works at the counter |
| Work aisle, one cook | 42" | Between the island and the facing counter |
| Work aisle, two cooks | 48" | Room to pass behind someone |
| Width per seat | About 24" | More for comfort, or at a corner |
| Overhang for seating | About 12" to 15" | Knee room at counter height |
| Smallest useful island | About 48" × 24" | Prep space only, no seating |
What are the standard kitchen island dimensions?
There is no single standard size for an island, because it has to fit the room around it. What is standard is the set of heights and clearances every kitchen designer works from:
- Height: 36 inches, the same as the perimeter counters, or 42 inches for a raised bar.
- Depth: a base cabinet is 24 inches deep, so an island with cabinets on one side and seating on the other is usually around 36 to 42 inches deep once the overhang is added.
- Length: whatever the room allows after the aisles are taken out.
An island much smaller than about 4 feet by 2 feet stops being useful as a work surface. Below that, a movable cart or a peninsula usually does the job better.
How much space do you need around a kitchen island?
This is the number that decides everything else. Work it out first, and the island’s size follows.
- 36 inches is the usual minimum for a walkway that nobody works in.
- 42 inches is the common figure for a work aisle, where one person cooks between the island and the range or sink.
- 48 inches is the common figure where two people cook at once, or where a dishwasher or oven door opens into the aisle.
Measure from the face of the counter, not the face of the cabinet. A counter overhangs the box, and an inch or two on each side is the difference between an aisle that works and one that does not.
How do you size an island to your kitchen?
Start with the room and subtract. Take the distance between the counters on either side, take away the aisle each side needs, and what is left is the island’s depth. Do the same the other way for length.
Here is where custom cabinetry earns its keep. A stock island is assembled from boxes in 3-inch steps, so the result is the nearest size that fits, and the leftover goes into a wider aisle than you planned or a filler panel. Crafted Cabinetry cuts to your measurements in 1/16-inch increments, so the island can be exactly as big as the room allows, and the aisles exactly as wide as you chose.
How much room does each island seat need?
Allow about 24 inches of width per stool. That is enough to sit down and eat; allow more if people will spend a long time there, and more again at an end where two seats meet at a corner.
For knee room, the counter needs to overhang the cabinets. At counter height, about 12 to 15 inches is the usual range; a raised 42-inch bar can get away with less because the stools sit higher. A deep overhang of stone needs support underneath, so decide the overhang early and plan the support with the cabinets.
Behind the stools, leave room to walk. A seated person pushes their stool back, so the aisle behind a seating side wants more space than a plain walkway.
What can a custom island hold?
An island is a run of base cabinets, so anything a base cabinet can hold, an island can too. The common ones:
- A sink and dishwasher, which turns the island into the main work station and makes the 42-inch aisle matter.
- A beverage or wine fridge, on the side away from the cooking.
- Deep drawers for pots and pans, beside the range across the aisle.
- A mixer lift, which raises a stand mixer to counter height and puts it away again.
Every Crafted island is built the same way as the rest of the kitchen: plywood boxes (3/4-inch on frameless, 1/2-inch behind a solid face frame on framed, with 3/4-inch available), full-extension dovetail drawers and soft-close hinges, delivered fully assembled.
When is a peninsula better than an island?
When the room cannot give up an aisle on all four sides. A peninsula is joined to the wall or to a run of cabinets at one end, so it needs clearance on three sides instead of four. In a kitchen too narrow for an island with proper aisles, a peninsula often gives the same counter space and seating without squeezing the walkway below 36 inches. The same heights, overhangs and seat widths apply.
Should an island be one piece or several?
A long island is usually built as several boxes joined on site under one countertop, which is how it gets through a front door. Plan the island as one piece of furniture in the design, and let the cabinet maker decide where the joins go.
Frequently asked questions
What is the standard height of a kitchen island?
36 inches, the same as the perimeter counters. A raised bar-height island is usually 42 inches.
How much clearance do you need around a kitchen island?
At least 36 inches for a walkway. The common planning figure for a work aisle is 42 inches, or 48 inches where two people cook or an appliance door opens into the aisle.
How many stools fit at a kitchen island?
Allow about 24 inches of counter width per stool. Divide the seating length by 24 and round down.
How much overhang does an island need for seating?
At counter height, about 12 to 15 inches of overhang gives knee room. A deep stone overhang needs support built into the cabinets.
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