Area converter
Convert between square meters, square feet, acres, hectares and pyeong, with a real-world size comparison and a land-area reference table.
Converted area
Area
-m²
- mm²
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- cm²
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- m²
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- km²
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- in²
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- ft²
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- yd²
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- Acre
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- Hectare
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- Pyeong
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Area conversion reference
| Unit | Equal to |
|---|---|
| 1 m² | 10.764 ft² |
| 1 ft² | 0.0929 m² |
| 1 acre | 4,046.86 m² = 43,560 ft² |
| 1 hectare | 10,000 m² = 2.471 acres |
| 1 pyeong | 3.3058 m² = 35.58 ft² |
| 1 km² | 100 hectares = 247.1 acres |
How it works
Area conversion translates measurements of two-dimensional space between units, using key relationships such as 1 acre equals 4,046.86 m² (43,560 ft²) and 1 hectare equals 10,000 m² (2.471 acres).
- Enter a value and unit
Or load a common area such as an apartment or 1 acre.
- Read every unit
All 10 units convert at once, from square millimeters to pyeong.
- Check the size comparison
See what everyday space the area is closest to.
Conversion factors
Every unit here converts through square meters (m²), the SI unit of area.
1 m² = 10.7639 ft² = 1.19599 yd² = 0.3025 pyeong
Squaring a linear conversion factor gives the area factor: since 1 ft equals 0.3048 m, 1 ft² equals 0.3048², or 0.0929, m². This is why area factors look unrelated to the length factors they come from.
What is a pyeong?
A pyeong is a traditional Korean unit of area still used for apartments and land in South Korea, equal to 3.3058 m², about 35.58 ft². Historically it represented the area of two tatami mats. A 30-pyeong apartment is about 99.2 m², roughly 1,068 ft².
Acres and hectares
An acre is a US and imperial unit traditionally defined as the area a yoke of oxen could plow in a day, equal to 4,046.86 m², about 90% the size of a football field. A hectare is 10,000 m², used internationally and in science. One hectare equals 2.471 acres, and 640 acres make 1 square mile.
Floor area can be measured differently
Real estate listings sometimes quote gross floor area, including walls and shared spaces, and sometimes net or usable area. When comparing a pyeong or square-meter figure between listings, check which measurement basis was used.
Frequently asked questions
How many square feet are in a square meter?
1 square meter equals 10.7639 square feet. To convert m² to ft², multiply by 10.764. To go from ft² to m², multiply by 0.0929. For example, a 100 m² apartment is 1,076 ft², and a 2,000 ft² house is about 185.8 m². Squaring the linear factor, 1 ft equals 0.3048 m, gives 0.3048², or 0.0929, for the area factor.
What is a pyeong and how does it convert to square meters?
A pyeong is a traditional Korean unit of area equal to 3.3058 m², about 35.58 ft². It is still widely used in South Korea for measuring apartments and land. To convert pyeong to m², multiply by 3.3058, so a 30-pyeong apartment is about 99.2 m², roughly 1,068 ft². To go the other way, divide m² by 3.3058.
How big is an acre in square meters and feet?
1 acre equals 4,046.86 m², or 43,560 ft². An acre is a US and imperial unit traditionally defined as the area a yoke of oxen could plow in a day. Visually, 1 acre is roughly 208.7 ft by 208.7 ft, about 63.6 m by 63.6 m, close to 90% the size of an American football field. 640 acres make 1 square mile.
What is the difference between a hectare and an acre?
A hectare equals 10,000 m², while an acre equals 4,046.86 m². So 1 hectare is 2.471 acres, and 1 acre is 0.4047 hectares. Hectares are used internationally and in science, while acres are more common in the US, UK and Canada for land. A football field is roughly 0.5 hectares, or 1.3 acres, including the end zones.
How many square miles is a square kilometer?
1 km² equals about 0.3861 square miles, and 1 square mile equals about 2.58999 km². These are the squares of the linear factors, since 1 mile equals 1.60934 km, so 1 mi² equals 1.60934², or 2.590, km². For example, New York City covers about 783 km² (302 square miles), and Paris covers about 105 km² (40.5 square miles).