Acres to Square Feet: Every Question Answered

Exactly 43,560 square feet. This is the international standard (1959 International Yard and Pound Agreement). A square acre measures 208.71 feet per side. The number derives from one Gunter's chain (66 ft) x one furlong (660 ft).Full page on this topic

1 hectare = 2.47105 acres. 1 acre = 0.404686 hectares. Hectares are the metric standard used in most countries; acres are used in the US, UK, Canada, and Australia for real estate.Full page on this topic

Exactly 640 acres = 1 square mile. Under the US Public Land Survey System (PLSS), this unit is called a section. A quarter-section is 160 acres; a township contains 36 sections.Full page on this topic

1 acre = 4,046.8564224 m2 exactly (international acre). Conversely, 1 m2 = 0.00024711 acres. To convert: multiply acres x 4,046.86 for m2, or divide m2 by 4,046.86 for acres.Full page on this topic

Half an acre = 21,780 square feet exactly (43,560 / 2). In metric: 2,023.43 m2. Visually, about 8 singles tennis courts arranged in a 2x4 grid, or a square about 147 x 148 feet.Full page on this topic

A quarter acre = 10,890 square feet exactly (43,560 / 4). This is the US median residential lot size. A square quarter-acre measures about 104 x 104 feet.Full page on this topic

Divide square feet by 43,560. Example: 100,000 sq ft / 43,560 = 2.296 acres. On a calculator: enter the square footage, then divide by 43,560.Full page on this topic

Yes. An acre is a unit of area, not a fixed shape. It can be a square, rectangle, L-shape, triangle, or any irregular polygon. The only requirement is that the total area = 43,560 sq ft.Full page on this topic

Half an acre (21,780 sq ft) is roughly 8 tennis courts, a square 147 x 148 feet, or the footprint of a 2,000 sq ft house plus a generous garden and driveway. Most American suburban lots are a quarter to a half acre.Full page on this topic

A US football field including end zones is 1.32 acres. The field of play between end zones is 1.10 acres. So one acre is smaller than either - 24% smaller than the full field. Farmers call one acre 'the farmer's football field' because it is the closest convenient reference.Full page on this topic

Five acres (217,800 sq ft) is approximately 4.5 football fields end-to-end, a square 466 x 467 feet, or enough land for a house, barn, orchard, pasture for 2-3 horses, and a large vegetable garden with room to spare.Full page on this topic

Forty acres is 1,742,400 sq ft. It is a quarter-quarter section under the PLSS - a quarter mile by a quarter mile. This was the basis of the '40 acres and a mule' promise and the 'back 40' phrase in US farming.Full page on this topic

An acre is defined as one Gunter's chain (66 ft) x one furlong (660 ft). Edmund Gunter designed his chain in 1620 as a surveying tool. The furlong was the distance an ox team could plow without rest. 66 x 660 = 43,560. Formalised internationally in 1959.Full page on this topic

A Gunter's chain is exactly 66 feet (22 yards), divided into 100 links (each link = 7.92 inches). It was the standard surveying tool from the 17th century. Ten square chains = one acre. 80 chains = one mile.Full page on this topic

A furlong is 660 feet (220 yards, 1/8 of a mile). Old English for 'furrow long' - the distance a team of oxen could plow a furrow without rest. It is still used in horse racing (e.g. '5 furlongs' = 5/8 of a mile).Full page on this topic

The international acre was formalised by the 1959 International Yard and Pound Agreement between the US, UK, Canada, Australia, New Zealand, and South Africa. It fixed the international foot at exactly 0.3048 m, which defined the international acre as exactly 4,046.8564224 m2.Full page on this topic

A historical US real-estate convention, typically about 36,000 sq ft (82.6% of a standard acre). It accounts for streets, sidewalks, and alleys in a city subdivision. Not a legal or SI unit. If you see it in a contract, always confirm the actual sq footage.Full page on this topic

An informal term used by US home builders, typically about 40,000 sq ft (92% of a standard acre). No legal definition. If you see 'builder's acre' in marketing, ask for the exact square footage.Full page on this topic

The US survey acre is approximately 43,560.174 sq ft (4,046.872609874 m2). It is based on the US survey foot (1200/3937 m), slightly longer than the international foot. The NGS deprecated the US survey foot on October 1, 2022.Full page on this topic

Modern real estate listings and deeds (post-2022): international acre (43,560 sq ft). Pre-2022 US federal land records: possibly US survey acre. City subdivision or old commercial documents: possibly commercial acre. Always confirm with a licensed surveyor for legal purposes.Full page on this topic

Yes. The National Geodetic Survey officially deprecated the US survey foot on October 1, 2022. All new federal surveys now use the international foot (0.3048 m exactly). Historical legal descriptions using the survey foot remain valid.Full page on this topic

No. For private landowners, the 2022 deprecation requires no action. Your property boundaries did not change. Resurveying would only be needed for a new legal description or subdivision.Full page on this topic

Google Maps uses the international foot (0.3048 m). All modern web mapping and GIS platforms use the international foot. The survey foot is only relevant for historical US federal land records.Full page on this topic

As little as 0.05 acres for an urban townhouse to 1+ acres for rural residential. The US median residential lot is 0.19 acres. Suburban lots typically range from 0.15 to 0.35 acres. Rural properties usually start at 1 acre.Full page on this topic

At minimum 1-2 acres per horse, with 2 acres preferred for sustainable pasture (Penn State Extension). For two horses: 3-4 acres. Less than 1 acre per horse requires heavy supplemental feeding.Full page on this topic

The US median residential lot is about 0.19 acres (8,276 sq ft). Suburban lots typically range from 0.15 to 0.35 acres. This varies significantly by state: California averages 0.18 acres, Vermont averages 0.91 acres.Full page on this topic

1 acre is a generous residential parcel. It is approximately 90% of a football field, or a square 208 x 208 feet. In urban areas, 1 acre is large. In rural areas, 1 acre is a modest homestead plot. It is more than sufficient for a house, large yard, and small outbuilding.Full page on this topic

The 2024 US average was 183.1 bushels per acre (USDA NASS). Iowa and Illinois regularly exceed 200 bu/acre in good years. The long-term national trend is about 0.5 bu/acre annual improvement.Full page on this topic

The 2024 US average was 51.4 bushels per acre (USDA NASS). Illinois and Iowa regularly achieve 55-62 bu/acre in top years.Full page on this topic

The 2024 national average cropland cash rent was $155/acre (USDA NASS). Iowa averaged $268/acre. Pasture rents average $14.50/acre nationally. Rents correlate closely with land values and crop revenue potential.Full page on this topic

An informal US farming phrase for one exact acre (43,560 sq ft, 208.7 x 208.7 ft). A real NFL field with end zones is 1.32 acres - 32% larger. Farmers use this as a quick mental shortcut for visualising one acre.Full page on this topic

Farmland averages: Iowa $9,395/acre, Illinois $8,360/acre, California $15,880/acre, pasture $1,720/acre national average (USDA NASS 2024). Urban and suburban land prices per acre are dramatically higher: Manhattan commercial land can exceed $20 million per acre.Full page on this topic

Divide the price per acre by 43,560 to get price per sq ft. Example: $9,395/acre / 43,560 = $0.2157/sq ft. To convert sq ft price to per-acre: multiply by 43,560.Full page on this topic

Texas rural land averages approximately $4,200/acre statewide (Texas Real Estate Research Center 2024-2025). This varies significantly: agricultural South Texas may be $1,500-$2,500/acre; Hill Country recreational land can exceed $10,000/acre; suburban fringe land near Dallas or Austin ranges from $50,000 to $500,000+/acre.Full page on this topic