Area Converter

Convert floor, land and map areas between metric and imperial/US units. Every factor is the exact square of a defined length.

Enter a value to convert.

How area conversion works

Result = Value × (m² per “from” unit) ÷ (m² per “to” unit)

Area units are squares of length units, so their conversion factors are the length factor squared. One foot is 0.3048 m, so one square foot is 0.3048 × 0.3048 = 0.09290304 m².

Example: a 50 m² apartment is 50 ÷ 0.09290304 = 538.1955208 square feet, about 538 ft².

The most common mistake is using the length factor for an area. A meter is about 3.28 feet, but a square meter is about 10.76 square feet (3.28 × 3.28), not 3.28.

Area of a room or plot

For a rectangle, multiply length by width in the same unit, then convert the result. A room of 3.6 m × 4.5 m is 16.2 m², which is 174.4 ft². A room of 12 ft × 15 ft is 180 ft², which is 16.72 m². If the sides are in different units, convert them to the same unit first with the length converter.

The exact definitions used

Area units and their exact value in square meters
UnitIn square metersDefined as
1 square millimeter (mm²)0.000001 m²(1 mm)²
1 square centimeter (cm²)0.0001 m²(1 cm)²
1 square meter (m²)1 m²SI unit of area
1 hectare (ha)10,000 m²100 m × 100 m
1 square kilometer (km²)1,000,000 m²(1 km)² = 100 ha
1 square inch (in²)0.00064516 m²(0.0254 m)²
1 square foot (ft²)0.09290304 m²(0.3048 m)² = 144 in²
1 square yard (yd²)0.83612736 m²(0.9144 m)² = 9 ft²
1 acre (ac)4,046.8564224 m²43,560 ft² = 4,840 yd²
1 square mile (mi²)2,589,988.110336 m²(1,609.344 m)² = 640 acres

Handy reference values

Common area conversions
FromTo
1 m²10.76391042 ft²
1 ft²929.0304 cm² (0.09290304 m²)
1 hectare2.471053815 acres
1 acre0.4046856422 ha (4,046.8564224 m²)
1 km²100 ha, 0.3861021585 mi²
1 mi²2.58998811 km² (640 acres)

Which units are used where?

Most countries give floor areas in square meters and land in square meters or hectares. In the United States, floor areas are given in square feet and land in acres; the UK often uses square feet for property and acres for land alongside metric units. A hectare is a square 100 m on each side, about 1.4 times the area of a standard 105 m × 68 m soccer pitch (7,140 m²).

Many countries also have traditional land units with local definitions (for example the Japanese tsubo or the Indian bigha, which varies by region). Those are not included here because their size is not the same everywhere.

Common questions

Is a UK acre the same as a US acre?

Yes, both are 4,840 square yards of the international yard, exactly 4,046.8564224 m². Some older US land records use the survey acre, based on the US survey foot retired in 2023, which is larger by about 4 parts per million (about 4,046.873 m²). The difference only matters for precise surveying.

What does “sq ft” or “sqm” mean?

They are informal abbreviations for square feet (ft²) and square meters (m²), common in property listings.

Can I convert square meters to meters?

No. Square meters measure area and meters measure length, so there is no conversion between them. If you know an area and one side of a rectangle, divide the area by that side to get the other side.

Sources

Last reviewed 11 November 2026. How we build and check our tools. Spotted a mistake? Report it.