How do I calculate the area of a room?

Rectangular/square rooms: Area = Length x Width. Example: 4.5 m x 3.2 m = 14.4 m2. For L-shaped rooms divide into two rectangles and sum. Enter dimensions for instant m2 and ft2 results.

How much paint do I need per square metre?

Standard wall paint covers 10-12 m2 per litre per coat. Wall area = perimeter x height minus doors and windows. Add 10% for waste. Two coats recommended for most colours.

What is the difference between gross area and net area?

Gross area includes walls and structural elements. Net area (living/usable area) excludes them. In Turkey, this distinction is legally regulated since 2012. Always check which measurement is being quoted when comparing properties.

Kameroppervlakte m² — m², ft² · Multi-Room Total

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Where is room area calculation used in practice?

Accurate floor area measurement is essential in four main contexts: home renovation and decoration (calculating how much flooring material to order — tiles, parquet, laminate — typically requiring 5–10% overage for cuts and waste; calculating wall paint coverage, where 1 litre covers approximately 10 m²); real estate (price per square metre comparison between properties; legal requirement in many countries to disclose net floor area in sales contracts); rental and commercial (rent calculations, furniture planning, workspace compliance checks); and construction (material quantity takeoffs for foundations, insulation and cladding).

Gross area vs net area: what you are actually measuring

Real estate listings typically state gross area — the total floor area including walls, structural elements and sometimes shared spaces like hallways. Net area (also called net living area or usable area) excludes walls, built-in furniture spaces and sometimes staircases. In Turkey, brüt alan vs net alan is a legally regulated distinction since 2012 — sales contracts must state net area. Always clarify which measurement applies. Pair with our Unit Converter to convert between m² and ft².

Kameroppervlakte m²

Where is room area calculation used in practice?

Gross area vs net area: what you are actually measuring

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