Room or plot area in any unit, with material and cost worked out.
Total area
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Square metres
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Square yards
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Order with waste
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Material cost
A geometric estimate from the measurements you enter. Real rooms have alcoves, doorways and irregular corners a simple shape does not capture — measure carefully, and order 5-10% extra material to allow for cuts and waste.
How this works
Rectangle width × length
Circle π × (diameter ÷ 2)²
Triangle ½ × base × height
L-shape split into two rectangles and add
Conversion
Value
1 square metre
10.764 sq ft
1 square yard
9 sq ft
1 square foot
144 sq in
1 acre
43,560 sq ft
1 hectare
107,639 sq ft
Order 10% extra for straight-laid flooring and 15% for diagonal or patterned work — offcuts add up.
Measure at the widest points and ignore skirting; you can trim, but you cannot stretch.
For an irregular room, split it into rectangles and add them — that is what the L-shape tab does.
Currency
Amounts follow the currency selected above.
How do I calculate square footage?
Multiply width by length in feet. A 12 by 15 foot room is 180 square feet. For an irregular space, split it into rectangles and add the parts.
How much extra flooring should I order?
Around 10% for a straight lay, 15% for diagonal or patterned layouts, and more for rooms with many corners. The waste field adds it for you.
How do I convert square metres to square feet?
Multiply by 10.764. So 20 square metres is about 215 square feet.
How many square feet is an acre?
An acre is 43,560 square feet — roughly the size of a US football field without the end zones. A hectare, the metric equivalent unit, is larger at 107,639 square feet.