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Square Feet to Acre Conversion:
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An acre is a unit of land area used in the imperial and US customary systems. It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly 43,560 square feet.
The standard conversion is:
This conversion is fixed and does not vary based on location or other factors.
Details: The acre was originally defined in the Middle Ages as the amount of land that could be plowed in one day with a yoke of oxen. The modern measurement was standardized in the British Weights and Measures Act of 1878.
Tips: Enter the number of acres in the input field and click "Calculate" to convert to square feet. The calculator will display the result in both numerical and formatted form.
Q1: Is an acre the same size worldwide?
A: Yes, an acre is standardized internationally at exactly 43,560 square feet.
Q2: How big is an acre visually?
A: An acre is roughly the size of a football field without the end zones, or about 90% of a soccer field.
Q3: Can I convert square feet back to acres?
A: Yes, divide the number of square feet by 43,560 to get acres.
Q4: Why is an acre 43,560 square feet?
A: This number comes from the traditional definition of 1 chain (66 feet) × 1 furlong (660 feet) = 43,560 square feet.
Q5: Are there metric equivalents?
A: Yes, one acre equals approximately 0.4047 hectares or 4,047 square meters.