Kitchen Island Size & Fit Guide

SHOPKITCHENS PLANNING LIBRARY

Kitchen Island Size & Fit Guide

An island fits only when the room can accommodate the perimeter cabinets, the island depth and usable walkways on both sides. Test the full cross-width rather than choosing an island size from room square footage alone.

QUICK ANSWER
  • Room width = perimeter depth + walkway A + island depth + walkway B + opposite depth
  • Add seating overhang to the island depth where it projects into circulation
  • Test appliance doors and seating zones, not just static dimensions
  • Use preliminary math for planning; verify actual site conditions before ordering

Last reviewed: September 2026 · EVERGREEN

FIGURE — Island cross-width — Add the perimeter depth, both walkways and the proposed island depth. Seating overhang changes the occupied depth on the seating side.

Island Fit Calculator

Room width = perimeter depth + walkway A + island depth + walkway B + opposite perimeter depth.

JavaScript enhances this calculator; the formula above remains available without it.

FIGURE — Seating overhang — A seating overhang extends beyond the cabinet box. Include it when checking circulation and adjacent furniture.
Download Printable PDFDownload Island Fit WorksheetTry an Island in My Kitchen

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