Team Maths -
Created by: Team Maths -, Last Updated: April 25, 2024


An acre is a unit of area commonly used in the United States and the United Kingdom for measuring land. One acre is equivalent to 43,560 square feet, about 4,047 square meters, or about 0.4047 hectares. Historically, an acre represented the amount of land that could be plowed by a yoke of oxen in one day. Today, it continues to be used predominantly in real estate and agriculture to describe the size of plots of land.

What Is a Acre?

It is defined as 43,560 square feet, roughly equivalent to 4,840 square yards, or about 4,047 square meters

An acre is a traditional unit of area measurement primarily used in the United States and the UK, particularly in real estate and agriculture. Historically, the acre was conceived as the area a pair of oxen could plow in one day. It continues to serve as a standard measure for land plots, commonly used to describe the size of parks, farms, and housing developments.

Tools to Measure Acre

Tools to Measure Acre
  1. LiDAR Technology: LiDAR (Light Detection and Ranging) is a remote sensing method that uses light in the form of a pulsed laser to measure variable distances to the Earth. This technology can generate precise, three-dimensional information about the shape of the Earth and its surface characteristics, ideal for detailed land and forest surveying.
  2. Satellite Imagery: Using images from satellites, one can calculate the area of large plots of land from a remote location. Software tools can analyze these images to provide area measurements in acres, especially useful for inaccessible or large-scale properties.
  3. UAV (Unmanned Aerial Vehicles) Photogrammetry: Drones equipped with high-resolution cameras can capture a series of overlapping images of a property. These images are then processed using photogrammetry software to create detailed and accurate maps, from which acres can be calculated.
  4. Robotic Total Stations: These are automated versions of the traditional total stations that can track, scan, and measure with minimal human intervention. They offer high precision and efficiency, particularly suitable for large land survey projects.
  5. Echo Sounders: Mainly used for underwater surveying, echo sounders can also be adapted for floodplain mapping and measuring submerged land areas. These devices work by emitting sound waves and measuring the echo to calculate the distance and area.
  6. Mobile Mapping Systems: These systems integrate various technologies, including GPS, laser scanners, and inertial navigation systems, mounted on a mobile platform such as a vehicle. They can rapidly collect data on the go, useful for large tract land assessments.
  7. Augmented Reality (AR) Apps: Some AR applications allow users to visually map and measure land by simply walking the perimeter with a smartphone or tablet. These apps can overlay the measured data on live video feeds, providing a real-time view of the area in acres.

Converting Acre to Other Units of Measurement of Length

Acre Measurements

Here’s a table showing the conversion of acres to other common units of area:

Area UnitConversion from Acres (ac)
Square Meters1 ac = 4,046.86 sq m
Square Kilometers1 ac = 0.00404686 sq km
Square Feet1 ac = 43,560 sq ft
Square Yards1 ac = 4,840 sq yd
Hectares1 ac = 0.404686 hectares
Square Miles1 ac = 0.0015625 sq mi

Understanding how to convert acres to other units of area is crucial when dealing with land measurements, whether for agriculture, real estate, or environmental management. Accurate conversions between acres and other units ensure effective planning and resource allocation. Here’s a straightforward guide to converting acres to and from other common units of area:

Acres to Square Meters:

1 acre = 4,046.86 square meters
  • Multiply the acre value by 4,046.86 to convert to square meters.
  • Example: 2 acres is 2 x 4,046.86 = 8,093.72 sq m.

Square Meters to Acres:

4,046.86 square meters = 1 acre
  • Divide the square meter value by 4,046.86 to convert to acres.
  • Example: 10,000 sq m is 10,000 ÷ 4,046.86 = 2.47 acres.

Acres to Square Feet:

1 acre = 43,560 square feet
  • Multiply the acre value by 43,560 to convert to square feet.
  • Example: 3 acres is 3 x 43,560 = 130,680 sq ft.

Square Feet to Acres:

43,560 square feet = 1 acre
  • Divide the square foot value by 43,560 to convert to acres.
  • Example: 87,120 sq ft is 87,120 ÷ 43,560 = 2 acres.

Acres to Square Yards:

1 acre = 4,840 square yards
  • Multiply the acre value by 4,840 to convert to square yards.
  • Example: 1 acre is 1 x 4,840 = 4,840 sq yd.

Square Yards to Acres:

4,840 square yards = 1 acre
  • Divide the square yard value by 4,840 to convert to acres.
  • Example: 9,680 sq yd is 9,680 ÷ 4,840 = 2 acres.

Acres to Hectares:

1 acre = 0.404686 hectares
  • Multiply the acre value by 0.404686 to convert to hectares.
  • Example: 5 acres is 5 x 0.404686 = 2.02343 hectares.

Hectares to Acres:

1 hectare = 2.47105 acres
  • Multiply the hectare value by 2.47105 to convert to acres.
  • Example: 3 hectares is 3 x 2.47105 = 7.41315 acres.

Uses of Acre

Uses of Acre
  1. Agriculture: Acres are predominantly used to measure tracts of agricultural land. This helps in planning for planting, irrigation, and harvesting, as well as estimating yields and managing resources efficiently.
  2. Real Estate: In real estate, acres are used to describe the size of land plots. This is important for sales, property valuations, and in legal descriptions that define property boundaries.
  3. Urban Planning: Urban and rural planners use acres to map out development projects, including residential subdivisions, parks, and other community facilities. It helps in the zoning process and ensures that space is allocated appropriately for different uses.
  4. Environmental Management: Acres are used in environmental management to gauge the scale of conservation areas, calculate the size of habitats, and manage forestry resources. This helps in biodiversity conservation efforts and the sustainable management of natural resources.
  5. Legal and Administrative Use: Acres are often used in legal documents and government records to describe the size of land parcels. This standardization helps in maintaining clear and consistent land records.
  6. Surveying: Surveyors use acres in their work to measure land and determine property boundaries. This measurement helps in creating accurate maps and land descriptions.


How much is 1 acre mean?

One acre is a unit of area measurement equal to 43,560 square feet, about 4,046.86 square meters, or approximately 0.4047 hectares. It’s commonly used in land measurement.

What size is 1 acre in feet?

One acre is equivalent to 43,560 square feet. This measurement is commonly used to describe the size of land in real estate, agriculture, and surveying.

What size is 5 acres?

Five acres is approximately 217,800 square feet or 20,234 square meters. This area is roughly equivalent to 4.5 football fields or a moderate-sized farm plot.

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