Enter a value and select units to see the formula.
Conversion factors sourced from NIST and SI standard definitions. Results are mathematically exact within floating-point precision.
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Metric & Imperial — Square Feet, Acres, Hectares, Square Meters & More
Instantly convert area between Metric and Imperial units. Real-time calculation, proportional visual scale, real-world size context, adjustable decimal precision, and print-ready output. All calculations happen in your browser — your data never leaves your device.
Conversion factors sourced from NIST and SI standard definitions. Results are mathematically exact within floating-point precision.
| From | To | Multiply by | Common use |
|---|---|---|---|
| 1 Acre | Square Feet | 43,560 | US real estate & land |
| 1 Acre | Square Meters | 4,046.856 | Agriculture, international |
| 1 Acre | Hectares | 0.404686 | Farming, land surveys |
| 1 Hectare | Square Meters | 10,000 | Metric land measurement |
| 1 Hectare | Acres | 2.47105 | Agriculture |
| 1 Square Mile | Acres | 640 | US geography & counties |
| 1 Square Mile | Square Kilometers | 2.58999 | Geographic areas |
| 1 Square Meter | Square Feet | 10.7639 | Floor area, international |
| 1 Square Foot | Square Meters | 0.092903 | Flooring, construction |
| 1 Square Kilometer | Square Miles | 0.386102 | City & country areas |
One acre equals exactly 43,560 square feet. This is one of the most commonly used land area conversions in the United States, particularly in real estate and agriculture. To put it in perspective, one acre is roughly the size of a standard American football field excluding the end zones.
A hectare equals exactly 10,000 square meters and is the standard unit of land area in the metric system. One hectare equals approximately 2.471 acres. Hectares are used globally for agricultural and land measurement and are the preferred unit in most countries outside the United States.
One square meter equals approximately 10.764 square feet. Conversely, one square foot equals approximately 0.0929 square meters. Square meters are the standard unit for room and floor area in most of the world, while square feet remain dominant in the United States for real estate listings and construction.
One square mile equals exactly 640 acres. Square miles are used for large geographic areas such as counties, national parks, and cities, while acres are used for individual parcels of land such as farms, lots, and residential properties.
The Are (equal to 100 square meters) was a historic metric unit that has not been part of the official International System of Units (SI) since the SI was formalized. The Hectare — which equals 100 Ares — is the correct modern metric unit for land area and is fully supported in this converter. If you need to work with Ares, simply divide your Hectare result by 100.
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