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Square metre calculator

Choose a shape and enter its measurements. If the space isn't a simple rectangle, split it into parts and the calculator adds them up.

It also shows the result in square feet.

How it's calculated

Rectangle: length × width.
Triangle: base × height ÷ 2.
Circle: π × radius × radius, where the radius is half the diameter. 1 m² is 10.76 ft².

An example

An L-shaped living room can be split into a 5 × 4 m rectangle and a 3 × 2 m one. That is 26 m² in total.

A round table 2 m across covers 3.14 m².

Frequently asked questions

How do I work out the area of a room?

Measure the length and width in metres and multiply them. A 4 × 3 m room is 12 m².

What if my measurements are in inches or centimetres?

Convert them first: divide inches by 12 to get feet, or centimetres by 100 to get metres. 350 cm is 3.5 m.

How do I convert square metres to square feet?

Multiply by 10.76. 20 m² is 215.28 ft².

Key terms

Square metre (m²): The area of a square 1 metre on each side.
Square foot (ft²): The area of a square 1 foot on each side.

The same calculation in other countries

Up-to-date official data

We check the official sources automatically, every day.

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