Acre Converter
Convert Acre to Square Mile and more • 39 conversions
0
Unit Explanations
Acreac
Source UnitAn acre is a unit of area commonly used in the United States and the United Kingdom for measuring large plots of land. It is defined as exactly 43,560 square feet, which is equivalent to 4,840 square yards or about 0.4047 hectares. The acre is not part of the International System of Units (SI) but remains in widespread use, particularly in agriculture, real estate, and land development. The acre can be visualized as a rectangle measuring 660 feet long and 66 feet wide, or as a square measuring approximately 208.71 feet on each side. Despite being an imperial unit, its continued use underscores the cultural significance of land measurement in property and agriculture.
Current Use
Today, the acre is extensively employed in various industries, notably in agriculture, real estate, and urban planning. In the United States, it is a standard unit for measuring farmland, with farmers using it to calculate crop yields and land value. Real estate agents often refer to acreage when listing properties, emphasizing the size of land available for sale. Urban planners also utilize acres to design parks, green spaces, and residential developments. Countries like Canada and the UK also use acres alongside metric units, particularly in rural areas. Additionally, some states have legislation that defines land use based on acreage, illustrating its importance in land management and environmental planning.
Fun Fact
The term 'acre' was originally defined based on how much land a team of oxen could plow in a day.
Square Milemi²
Target UnitA square mile is a unit of area commonly used in the United States and other countries that employ the imperial system. It is defined as the area of a square with sides each measuring exactly one mile in length. In terms of its size, one square mile is equivalent to 640 acres, 2.58999 square kilometers, or 3,097,600 square yards. This unit is primarily used to measure large tracts of land, making it particularly useful in fields like agriculture, real estate, and urban planning. The square mile is not part of the International System of Units (SI), but it remains relevant in many practical applications due to the widespread use of the mile in English-speaking countries.
Current Use
The square mile is extensively used in the United States for measuring large land areas. It is a standard unit in real estate, land surveying, and urban planning, where properties and developments are often assessed in terms of square miles. In agriculture, it helps farmers and agribusinesses to quantify large tracts of land for crop and livestock management. Environmental science uses square miles to examine ecosystems, while transportation planning uses it for mapping road networks and urban sprawl. Despite the global adoption of the metric system, the square mile remains a staple in these fields due to historical precedence and existing legal frameworks.
Fun Fact
The District of Columbia was originally designed to be a perfect square measuring 10 square miles.
All Area Conversions
84 convertersPopular Conversions
📐Conversion Formula
= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
Quick Examples
💡 Pro Tip: For the reverse conversion ( → ), divide by the conversion factor instead of multiplying.
Acre
area • Non-SI
Definition
An acre is a unit of area commonly used in the United States and the United Kingdom for measuring large plots of land. It is defined as exactly 43,560 square feet, which is equivalent to 4,840 square yards or about 0.4047 hectares. The acre is not part of the International System of Units (SI) but remains in widespread use, particularly in agriculture, real estate, and land development. The acre can be visualized as a rectangle measuring 660 feet long and 66 feet wide, or as a square measuring approximately 208.71 feet on each side. Despite being an imperial unit, its continued use underscores the cultural significance of land measurement in property and agriculture.
History & Origin
The acre has its origins in the Anglo-Saxon period, derived from the Old English word 'æcer', which translates to 'field'. The term was used to describe the area of land that could be plowed in one day by a yoke of oxen, typically measuring about 40 rods by 4 rods. This practical measurement represented both the agricultural practices and the social structures of the time, marking the importance of land cultivation in early societies. Historically, the acre was not a fixed measurement; its size varied regionally before standardization in the 19th century.
Etymology: The word 'acre' comes from the Old English 'æcer', which means 'field' or 'open land'.
Current Use
Today, the acre is extensively employed in various industries, notably in agriculture, real estate, and urban planning. In the United States, it is a standard unit for measuring farmland, with farmers using it to calculate crop yields and land value. Real estate agents often refer to acreage when listing properties, emphasizing the size of land available for sale. Urban planners also utilize acres to design parks, green spaces, and residential developments. Countries like Canada and the UK also use acres alongside metric units, particularly in rural areas. Additionally, some states have legislation that defines land use based on acreage, illustrating its importance in land management and environmental planning.
💡 Fun Facts
- •The term 'acre' was originally defined based on how much land a team of oxen could plow in a day.
- •One acre is roughly equivalent to 90% of a football field when excluding the end zones.
- •The largest farm in the United States is over 300,000 acres.
📏 Real-World Examples
🔗 Related Units
Square Mile
area • Non-SI
Definition
A square mile is a unit of area commonly used in the United States and other countries that employ the imperial system. It is defined as the area of a square with sides each measuring exactly one mile in length. In terms of its size, one square mile is equivalent to 640 acres, 2.58999 square kilometers, or 3,097,600 square yards. This unit is primarily used to measure large tracts of land, making it particularly useful in fields like agriculture, real estate, and urban planning. The square mile is not part of the International System of Units (SI), but it remains relevant in many practical applications due to the widespread use of the mile in English-speaking countries.
History & Origin
The concept of the square mile originated in the British Imperial system, which was developed over centuries. The mile, from which the square mile is derived, has its roots in Roman times, where it was defined as 1,000 paces of a Roman legion, approximately 5,000 Roman feet. Over time, the exact length of a mile varied until the English statute mile was standardized as 5,280 feet in 1593. The standardization of the square mile followed, allowing for consistent land measurement across British territories and later in the United States.
Etymology: The word 'mile' originates from the Latin 'mille,' meaning 'thousand,' referring to the Roman mille passus or 'thousand paces.'
Current Use
The square mile is extensively used in the United States for measuring large land areas. It is a standard unit in real estate, land surveying, and urban planning, where properties and developments are often assessed in terms of square miles. In agriculture, it helps farmers and agribusinesses to quantify large tracts of land for crop and livestock management. Environmental science uses square miles to examine ecosystems, while transportation planning uses it for mapping road networks and urban sprawl. Despite the global adoption of the metric system, the square mile remains a staple in these fields due to historical precedence and existing legal frameworks.
💡 Fun Facts
- •The District of Columbia was originally designed to be a perfect square measuring 10 square miles.
- •Central Park in New York City is approximately 1.317 square miles.
- •The smallest county by area in the U.S. is Kalawao County, Hawaii, at 53 square miles.
📏 Real-World Examples
🔗 Related Units
Related Area Conversions
Explore more area conversions for your calculations.
Frequently Asked Questions
How do I convert to ?▼
To convert to , multiply your value by 1. For example, 10 equals 10 .
What is the formula for to conversion?▼
The formula is: = × 1. This conversion factor is based on international standards.
Is this to converter accurate?▼
Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.
Can I convert back to ?▼
Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.