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Kitchen Island Size Calculator

Enter your kitchen dimensions to find an island size that leaves proper walkway clearance on all sides — not just a number that technically fits.

Recommended Island Size
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How to Use This Calculator

  1. Enter your kitchen's total width and length in feet.
  2. Tell us whether you want seating at the island.
  3. Click Calculate to see the largest island size that still leaves safe walkway clearance on every side.

Frequently Asked Questions

How much clearance does a kitchen island need?

Most kitchen design guidelines recommend at least 42 inches (3.5 ft) of clearance on all sides for general movement, and 48 inches (4 ft) if you're adding seating so people can walk behind bar stools.

What is the minimum kitchen size for an island?

You generally need a kitchen at least 10-12 feet wide in one direction to fit a functional island with proper clearance on both sides.

How big should a kitchen island be for seating 4 people?

Plan for roughly 24 inches of counter width per person, so a 4-person island needs about 6-8 feet of seating edge, plus standard island depth of 2-4 feet.

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