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Area
20
square meters (m²)
Area in square feet 215.28 ft²

What Is the Square Meter Calculator?

The Square Meter Calculator works out the area of a rectangular space in square meters (m²) from its length and width. Square meters are the standard SI unit of area, used worldwide for floor plans, flooring, paint, landscaping, real estate and tiling projects. This tool is universal — it works in any country that uses the metric system.

How to Use It

Enter the length and the width of your space in meters. The calculator multiplies the two values to give the area in square meters, and also converts the result to square feet for convenience. For non-rectangular areas, split the space into rectangles, calculate each one, and add the results together.

The Formula Explained

The core formula is simply $$\text{Area} = \text{Length} \times \text{Width}$$ If a room is 5 meters long and 4 meters wide, the area is \(5 \times 4 = 20\) square meters. To convert to square feet, multiply the square-meter result by \(10.7639\), since one square meter equals 10.7639 square feet.

Rectangle with length and width labeled, area shaded
Area equals length times width, measured in square meters.

Worked Example

Suppose you are tiling a kitchen floor measuring 6 m by 3.5 m. The area is \(6 \times 3.5 = 21\) m². In square feet that is \(21 \times 10.7639 \approx 226.04\) ft². If each tile box covers 1.5 m², you would need at least \(21 \div 1.5 = 14\) boxes (plus extra for cuts and waste).

Rectangle divided into a grid of unit squares each one meter by one meter
A 5 by 3 meter rectangle contains 15 one-square-meter tiles.

FAQ

How do I measure an irregular room? Break it into rectangles, find each rectangle's area, then sum them.

How many square feet is one square meter? One square meter equals about 10.7639 square feet.

Can I enter centimeters? No — convert to meters first by dividing centimeters by 100 (e.g. 350 cm = 3.5 m).

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