Is that room big or small?

Room dimensions are hard to judge from a floor plan. Here is what each number actually corresponds to.

Almost exactly a kitchen

14 m² is bigger than 4 of the 8 references on this page.

single bedroom7.5 m²home office9 m²double bedroom13.5 m²kitchen14 m²Your room14 m²living room21 m²

Reference figures are measurements and are rounded; the unit conversion behind them is exact.

Every reference on this page, with its size and its ratio to your number
Reference Size Yours ÷ theirs Note
bathroom 4.4 m² 3.18×
single bedroom 7.5 m² 1.87× The UK legal minimum for one adult is 6.5 m²
home office 9 m² 1.56×
double bedroom 13.5 m² 1.04×
kitchen 14 m² 1×
living room 21 m² 0.667×
open-plan kitchen and living 35 m² 0.4×
two-car garage 36 m² 0.389×

Worth knowing

  • UK space standards require a single bedroom of at least 7.5 m² and a double of 11.5 m², with a 2.15 m ceiling over 75% of the floor.
  • A double bed alone occupies 2.8 m², so a 7.5 m² room is a bit under three bed-widths across.

Frequently asked

What is the minimum legal bedroom size?

In England, a room let to one adult must be at least 6.51 m², and 10.22 m² for two. The Nationally Described Space Standard sets 7.5 m² for a single and 11.5 m² for a double in new homes.

How do I work out a room’s area?

Multiply length by width for a rectangle. For an L-shape, split it into rectangles and add them; for anything odd, split it into triangles.

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