Floor Area of a Room Calculator

Use this room area calculator to work out the floor area of a room.

floor area

A = width * length

If your room is rectangular, then simply enter the width and depth of the room and the unit of measure, and the resulting floor area of the room will be calculated in several different units of measure, both metric and imperial, useful if you are meauring the room in one unit but for example the floor tiles you want are measured in a different unit.

If on the other hand your floor area is not a perfect rectangle try breaking the room down into rectangular sections and enter the dimensions for each section into the calculator below, adding each result together to give you the total floor area.

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Calculated Room Size

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Equivalents

0 __ are equal to...

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feet
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centimetres
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How to work out the room size in m2 (square metres):

  • 1. Measure the width of your room in metres.
  • 2. Measure the length of your room in metres.
  • 3. Multiply room width by room length to get room area.

Example room size calculation:

3 metres wide x 6 metres long = 18 m2 (square metres).

floor area

Room area in m2 = Width metres * Length metres

FAQs

Have a question about our this calculator? See our list of frequently asked questions below.

How do you find the area of a room?
To calculate the area of a room, multiply its width by its length. Formula: Area = Width * Length
How to work out m2 (square metres)?
To calculate m2 measure the width in metres then measure the length in metres. Multiplying the width by length will give the result in m<sup>2</sup> (square metres).
When is it necessary to calculate the floor area of a room?
It is necessary to calculate the floor area of a room when working out how many floor tiles, how much carpets, how much screed etc might be required when resurfacing your floor.

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