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A square foot (ft²) is a unit of area defined by a square whose sides each measure one foot in length. In simpler terms: draw a square with sides of one foot each — the area inside is one square foot.
This unit is part of the imperial and U.S. customary measurement systems, and is commonly used in real estate, construction, interior design and land measurement in many countries including India, the U.S., Canada and the UK.
Because one foot equals 12 inches, a square foot corresponds to 144 square inches. In terms of metric conversion: 1 square foot ≈ 0.092903 square metres. Using square feet is practical when discussing smaller building footprints, apartment layouts, room sizes, flooring and interior areas.
Square Feet=Acres×0.00404686
This measurement is based on the exact relationship derived from one metre being equal to 3.28084 feet, and is widely used as the standard conversion factor in real-estate, construction and land measurement.
A square metre (m²) is the standard derived unit of area in the metric system. It is defined by a square whose sides each measure one metre in length.
The square metre is used globally — especially in countries that have adopted the metric system for land, construction and general measurement. It simplifies many calculations because metric units are based on powers of ten.
Because a metre is about 3.28084 feet, squaring that gives the conversion factor from square metres to square feet (≈ 10.7639 ft² per m²).
In practical use, square metres are used to measure rooms, apartments, plots or buildings, and often make metric-based international comparisons easier.
The concept of a “foot” as a unit of length has ancient roots — various cultures measured a “foot” based on a human foot or standard rod. Over time, standardized definitions emerged.
Once the foot was defined, measuring area using a square whose sides are one foot gives what we call a square foot. The use of “square foot” units in building and real-estate sectors developed alongside the growth of modern architecture and construction in English-speaking countries.
With international standardization (such as the “international foot” defined as exactly 0.3048 metres), the square foot likewise became precisely definable in metric terms.
Thus the square foot is embedded in the measurement traditions of building, real-estate and land-transaction practices in many regions.
The meter was introduced as part of the metric system during the late 18th century, with the intention of creating a universal, decimal-based measurement system.
With the definition of the meter, the square meter followed as the natural unit for area in the metric system. Because the metric system aimed to rationalize and unify measurement globally, the square meter has become the standard in scientific, engineering, real-estate and international contexts.
Over time, as countries adopted metric standards, the square meter replaced many older non-metric area units, making measurement more consistent across borders and disciplines.
Defined as the area of a square with sides of one foot (12 inches).
Defined as the area of a square with sides of one metre (~3.2808 ft).
It is a smaller unit of area compared to the square metre.
It is a larger unit compared to a square foot — 1 m² ≈ 10.7639 ft².
More commonly used historically in the U.S., Canada, India (for real-estate floor area), UK for some building measures.
Widely used globally in metric-system countries for building area, land measurement and scientific or engineering work.
To convert to square metres: multiply by ~0.092903.
To convert to square feet: multiply by ~10.7639.
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