Free scaled layout comparison

Kitchen Island vs Peninsula Planner

Compare a kitchen island and peninsula on a proportional floor plan, test cabinet sizes against your own aisle target, and inspect the narrowest modeled clearances.

Scaled floor-plan workspace

Compare floor space and aisle clearances

Island meets your target
Kitchen island floor planA proportional 14 by 12 foot l shape kitchen showing a 72 by 36 inch island and its 36 inch target clearance envelope.

Dashed area shows your 36-inch target; it is an input, not a code determination.

Island versus peninsula comparison

Both options meet your selected aisle target. Compare workflow, storage, seating, and construction scope.

rear clearance

36 in

3 ft compared with your 36-inch target.

front clearance

48 in

4 ft compared with your 36-inch target.

left clearance

36 in

3 ft compared with your 36-inch target.

right clearance

36 in

3 ft compared with your 36-inch target.

The dashed envelope represents the aisle clearance you choose. It does not determine building-code compliance, accessibility, appliance safety, or whether doors, drawers, seating, and people can operate together.

Kitchen layout comparison guide

Test an island and peninsula against the same room

An island-versus-peninsula decision is more useful when both options are tested against the same measured room and the same circulation goal. This planner models perimeter cabinet runs, places each candidate in the remaining floor area, and reports the narrowest open passage around it.

A passing result means only that the simplified rectangles meet the aisle target you entered. A real kitchen plan also has appliance and cabinet door swings, work zones, seating in use, plumbing, electrical service, ventilation, structure, accessibility requirements, and local rules that require project-specific review.

How to use this tool

  1. Measure the room

    Enter finished wall-to-wall dimensions and select the perimeter-counter shape that most closely matches the fixed layout.

  2. Set your aisle target

    Use a target appropriate to the household and project guidance rather than assuming one number works for every kitchen.

  3. Size and position the candidate

    Enter the cabinet dimensions, seating overhang, and stool count. For an island, measure its planned left and back offsets.

  4. Compare and validate

    Inspect every modeled side, then add real door swings and field constraints with a qualified kitchen professional.

How the fit check works

The planner treats the room, perimeter counters, and candidate cabinet as rectangles viewed from above. For an island, it measures open distance to the back counter, front wall, and available left and right boundaries. For a peninsula, the anchored back edge is excluded and open distance is measured at the front and both sides.

  • Narrowest modeled passage is the minimum of the reported open sides.
  • Meets target means that minimum is at least the aisle value you entered.
  • A negative clearance identifies an overlap with a fixed counter run or room edge.

Island tradeoffs to evaluate

An island preserves circulation on all sides and can create a strong central work surface, but it consumes open floor area and requires enough space for several passages at once. Its usefulness depends on where it sits relative to storage, cleanup, cooking, and traffic paths.

  • Check appliance doors and cabinet drawers in their fully open positions.
  • Model occupied stools, not just an empty overhang.
  • Consider how people cross the kitchen when another person is working.

Peninsula tradeoffs to evaluate

A peninsula connects to the perimeter, so it may provide counter and storage area without requiring circulation on the attached edge. That can help in a tighter room, but the connection can create a single entrance, concentrate traffic, or interrupt movement between work zones.

  • Confirm which end can connect without blocking an existing opening.
  • Check the front-end passage and the route around seated occupants.
  • Include any end panel, support, waterfall edge, trim, and countertop projection in the measured footprint.

Example of reading the comparison

Suppose the selected island has passages of 42, 44, 39, and 48 inches around its sides while the user’s target is 42 inches. Its narrowest passage is 39 inches, so the tool flags it for review. If the peninsula’s three open sides measure 45, 50, and 43 inches, its narrowest passage is 43 inches and it meets that same user-entered target.

  • The comparison does not automatically make the peninsula the better kitchen.
  • A smaller island or different island position may change the result.
  • Workflow, construction cost, utilities, storage, and resale preferences remain separate decisions.

Measurements omitted from the simple floor plan

The preview intentionally avoids pretending that a rectangle is a complete construction drawing. Before ordering cabinetry, a field plan should capture out-of-square walls, openings, casing, baseboard, radiators, columns, soffits, utility locations, floor transitions, appliance specifications, filler strips, countertop overhangs, and installation tolerances.

  • Measure at multiple points instead of assuming parallel walls.
  • Use appliance manufacturer clearance and ventilation requirements.
  • Have the final plan reviewed for applicable building, electrical, plumbing, fuel-gas, ventilation, and accessibility requirements.

Use this planner for early layout comparison only. Do not order cabinets, relocate utilities, remove structure, or begin construction from this drawing. Verify the complete field plan with qualified design and trade professionals and the authorities responsible for the project.

Frequently asked questions

How much space do I need around a kitchen island?

There is no single number this tool can choose for every project. Enter the aisle target supported by your household needs, appliance specifications, design guidance, and applicable requirements; the planner then tests your geometry against it.

Why does the peninsula use the same length and depth inputs as the island?

The comparison holds the candidate size constant. Island length becomes the peninsula’s projection into the room, while cabinet depth becomes its side-to-side width.

Does seating overhang count in the clearance result?

The overhang and stools appear in the preview, but the numeric cabinet clearance currently measures the cabinet footprint. Add the occupied seating depth to your real circulation review.

What does a negative clearance mean?

The candidate rectangle overlaps a modeled perimeter run or extends beyond the room. Correct its size or position before interpreting the remaining sides.

Can this replace a kitchen designer or permit drawing?

No. It is an early comparison and measurement aid. A buildable plan needs verified field dimensions, product specifications, construction details, utility coordination, and review for applicable requirements.

Built for transparent, user-controlled estimates

Methodology reviewed July 2026. Inputs stay in your browser; results change only when you change an assumption.

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