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Dining table size calculator

What dining-table size fits the room and the number of seats?

Before you startMeasure the clear floor area after accounting for cabinets, islands, and other fixed pieces.
Step 1

Add your measurements

Get a starting table length and see the chair space left around it.

Example numbers are loaded

Replace each example with what you measured. The example result on the right updates as you type.

Plan the tableCount the seats used on a normal day.
Measure the dining areaUse the clear space available to the table and pulled-out chairs.

Measurements stay in this browser and are never sent to analytics.

Example resultLooks good on paper

The planning table fits with the selected clearance

A 6-seat rectangular starting point is about 180 cm long.

Change the sample measurements to turn this into your estimate.
Table length
180 cm
Table width
90 cm
Clearance each side
90 cm
Dining table planning diagramA proportional schematic based on the entered values. It is not a construction drawing.
Proportional planning schematic - verify all dimensions on site.

Before you buy or start work

  • Check chair depth while occupied.
  • Test the route behind pulled-out chairs.
  • Consider a round or extension table if circulation is tight.
Method

What this result assumes

About 60 cm of table edge per regular place setting is used as a planning start.

A 90 cm table width is used for the screen.

Limitations

What it cannot confirm

This is a planning estimate, not a building-code, safety, installation, or delivery guarantee.

Confirm product-specific requirements with the manufacturer, installer, retailer, or qualified trade.

Formula 1.0.0Reviewed 2026-07-13General planning assumptions
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