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Convert between square meters, square feet, square yards, acres, hectares, square kilometers, and square miles. The universal area calculator for real estate, construction, agriculture, and land measurement.
7
Area Units Supported
10,000 m²
= 1 Hectare
43,560 ft²
= 1 Acre
640 ac
= 1 Square Mile
1 ac = 0.404686 ha
Square Meters
4,046.856422 m²
Square Feet
43,560 ft²
Square Yards
4,840 yd²
Hectares
0.404686 ha
Square Kilometers
0.00404686 km²
Square Miles
0.00156250 mi²
Each row shows what 1 unit of the left column equals in every other area unit.
| Unit | m² | ft² | yd² | Acres | Hectares | km² | mi² |
|---|---|---|---|---|---|---|---|
| 1 m² | 1 | 10.764 | 1.196 | 0.000247 | 0.0001 | 0.000001 | 3.861e-7 |
| 1 ft² | 0.0929 | 1 | 0.1111 | 2.296e-5 | 9.29e-6 | 9.29e-8 | 3.587e-8 |
| 1 yd² | 0.8361 | 9 | 1 | 0.000207 | 8.361e-5 | 8.361e-7 | 3.228e-7 |
| 1 Acre | 4,046.86 | 43,560 | 4,840 | 1 | 0.4047 | 0.00405 | 0.00156 |
| 1 Hectare | 10,000 | 107,639 | 11,960 | 2.471 | 1 | 0.01 | 0.00386 |
| 1 km² | 1,000,000 | 10,763,910 | 1,195,990 | 247.105 | 100 | 1 | 0.3861 |
| 1 mi² | 2,589,988 | 27,878,400 | 3,097,600 | 640 | 258.999 | 2.590 | 1 |
Area measures the extent of a two-dimensional surface. While length is measured in one dimension, area is always expressed in "square" units because it represents the product of two lengths. Different area units evolved to serve different purposes, from measuring rooms to continents.
The SI standard unit of area. One square meter is a square with sides of exactly 1 meter. Used globally for room sizes, floor plans, and building specifications. Ideal for spaces ranging from a desk to a warehouse.
The primary area unit in US real estate and construction. One square foot is a 12-inch by 12-inch square (0.0929 m²). Used for apartments, houses, office space, and retail square footage.
Equals 9 square feet or 0.8361 m². Commonly used in the carpet and flooring industry, as well as for fabric measurement. Also used in some countries for land area in informal contexts.
Equals 43,560 ft² or 4,046.86 m². Historically the area a yoke of oxen could plow in a day. The standard unit for land in the US and UK. Used for farms, ranches, and large residential lots.
Equals 10,000 m² (100 m x 100 m) or about 2.471 acres. The metric standard for land measurement worldwide. Used in agriculture, forestry, urban planning, and environmental science across most countries.
Equals 1,000,000 m² or 100 hectares. Used for cities, counties, national parks, and country areas. One square kilometer equals approximately 247 acres or 0.386 square miles.
Equals 640 acres, 2,589,988 m², or approximately 2.59 km². Used primarily in the US and UK for large geographic areas such as states, counties, and bodies of water. One square mile is also called a "section" in the US Public Land Survey System.
The simplest method for converting any area unit to any other is the two-step approach: first convert to square meters (the base SI unit), then convert from square meters to the target unit.
1 ft² = 0.09290304 m²
1 yd² = 0.83612736 m²
1 acre = 4,046.8564224 m²
1 hectare = 10,000 m²
1 km² = 1,000,000 m²
1 mi² = 2,589,988.110336 m²
Question: A US apartment is listed at 2,500 sq ft. How large is it in square meters?
Question: A farm covers 50 acres. What is that in square kilometers?
Question: A construction site is 3 hectares. How many square yards of fencing material are needed for the perimeter of a square site?
ft² to m²: Divide by 11 (actual: 10.764)
m² to ft²: Multiply by 11
Acres to hectares: Multiply by 0.4
Hectares to acres: Multiply by 2.5
In the United States, residential and commercial property sizes are listed in square feet. Land lots and large properties use acres. In Europe, Asia, and most of the world, square meters are standard for buildings and hectares for land. International listings often provide both metric and imperial measurements.
Best units: ft² / m² (buildings), acres / ha (land)
Construction projects in the US measure floor area in square feet, material quantities in square yards (for carpet, turf, and concrete), and site area in acres. Metric countries use square meters for everything. Understanding all three units prevents costly material ordering mistakes.
Best units: ft² / m² / yd² (materials), acres / ha (sites)
US farmers measure fields in acres, while international agricultural reporting, FAO data, and crop yield statistics use hectares. Knowing the conversion is critical for seed rates, fertilizer application, and irrigation planning when switching between US equipment manuals and international guidelines.
Best units: acres (US), hectares (international)
National parks, forests, and countries are measured in square kilometers or square miles. Environmental reports on deforestation, biodiversity, and carbon offsets use hectares globally. The IPCC, UN, and major environmental organizations standardize on hectares and square kilometers.
Best units: km² / mi² (regions), hectares (environmental)
| Unit | Equivalent in m² | Real-World Reference |
|---|---|---|
| 1 ft² | 0.0929 | A standard floor tile |
| 1 yd² | 0.8361 | A doormat or small rug |
| 1 m² | 1 | A card table top |
| 1 acre | 4,046.86 | 75% of a US football field |
| 1 hectare | 10,000 | About 2 football fields |
| 1 km² | 1,000,000 | A small town center |
| 1 mi² | 2,589,988 | A large neighborhood or suburb |
| Landmark | ft² | m² | Acres | Hectares |
|---|---|---|---|---|
| Tennis Court | 2,808 | 261 | 0.064 | 0.026 |
| Basketball Court (NBA) | 4,700 | 437 | 0.108 | 0.044 |
| Football Field (US, with end zones) | 57,600 | 5,351 | 1.32 | 0.535 |
| Soccer Pitch (FIFA average) | 76,900 | 7,140 | 1.76 | 0.714 |
| Central Park, NYC | 36,100,000 | 3,410,000 | 843 | 341 |
| Manhattan Island | — | 59,100,000 | 14,600 | 5,910 |
| City of London (Square Mile) | — | 2,900,000 | 717 | 290 |
If 1 meter = 3.281 feet, then 1 m² = 3.281² = 10.764 ft². A common error is using 3.281 instead of 10.764 when converting area.
Convert to square meters first, then from square meters to your target. This way you only need to remember 6 factors instead of 42 (all possible pairs).
Square feet should be about 10x square meters. Acres should be about 0.4x hectares. If your result violates these ratios, recheck your math.
1 foot = 0.3048 meters, but 1 square foot does NOT equal 0.3048 square meters. It equals 0.3048² = 0.0929 square meters. Always square the factor.
An acre is smaller than a hectare (1 acre = 0.405 ha). Treating them as equal can cause a 2.5x error in land area calculations, leading to massive cost or material miscalculations.
1 square mile = 2.59 square kilometers. They differ by a factor of 2.6x, which matters significantly for geographic and environmental calculations.
Convert any area unit to square meters first, then convert from square meters to your target unit. For example, to go from acres to square kilometers: multiply acres by 4,046.856 to get square meters, then divide by 1,000,000 to get square kilometers. Our area converter handles this automatically for all 7 supported units.
One square meter equals approximately 10.7639 square feet. Conversely, one square foot equals approximately 0.0929 square meters. This is because 1 meter equals 3.28084 feet, and when you square that linear conversion you get 10.7639.
An acre equals 4,046.86 square meters (43,560 square feet), while a hectare equals 10,000 square meters. A hectare is about 2.471 times larger than an acre. Acres are used primarily in the US and UK, while hectares are the international metric standard for land measurement.
One square mile contains exactly 640 acres. This relationship comes from the US Public Land Survey System, where a "section" is defined as one square mile (640 acres). A square mile equals approximately 2.59 square kilometers or 259 hectares.
For residential properties, use square feet (US) or square meters (most other countries). For land and large properties, use acres (US/UK) or hectares (international). Commercial real estate in the US typically uses square feet for building area and acres for lot size.
A hectare (10,000 square meters) is approximately 2.47 times the size of an American football field (including end zones). An American football field with end zones is about 0.535 hectares or 5,351 square meters. A FIFA soccer pitch ranges from 0.62 to 0.82 hectares depending on the stadium.
Multiply square yards by 0.836127 to get square meters, or divide square meters by 0.836127 to get square yards. One square yard equals 9 square feet or 0.836127 square meters. Square yards are commonly used in carpet and flooring measurements.
The largest unit is the square mile (2,589,988 square meters), used for states, counties, and large geographic regions. The smallest is the square foot (0.0929 square meters), used for rooms and small spaces. From smallest to largest: square feet, square yards, square meters, acres, hectares, square kilometers, square miles.
This converter uses internationally recognized conversion factors based on the International System of Units (SI). For legal land descriptions, surveying, and official documents, always verify conversions with a licensed surveyor or refer to your jurisdiction's official measurement standards. Slight rounding differences may occur at extreme precision levels.