What is an Acre?
An acre is a unit of land area equal to 43,560 square feet. That equals 4,840 square yards, 4,046.86 square meters, or 0.4047 hectares. A square-shaped acre lot measures 208.71 ft on each side.
The acre originated as the amount of land a yoke of oxen could plow in one day. Today it remains the standard land measurement in the United States, Canada, and the United Kingdom.
An NFL football field (excluding end zones) measures 48,000 sq ft. One acre is about 91% of a football field. A regulation soccer pitch ranges from 1.32 to 1.98 acres depending on the configuration.
How to Convert Square Foot to Acres
Divide the total square footage by 43,560. That single division gives you acres.
Step 1: Measure or obtain the total area in square feet. For a rectangular lot, multiply length x width. A 200 ft x 300 ft lot = 60,000 sq ft.
Step 2: Divide by 43,560. Example: 60,000 / 43,560 = 1.378 acres.
To reverse the conversion, multiply acres by 43,560 to get square feet. Example: 2.5 acres x 43,560 = 108,900 sq ft.
Worked Example
A property listing shows a lot at 150 ft x 250 ft. Total area: 37,500 sq ft. Divide by 43,560 = 0.861 acres, or about 7/8 of an acre. In metric terms, that equals 3,484 m² (0.348 hectares).
Common Lot Sizes in Square Feet and Acres
Standard residential and commercial lot sizes across the United States.
| Lot Type | Square Feet | Acres | Square Meters |
|---|---|---|---|
| Small urban lot | 2,500 sq ft | 0.057 | 232 m² |
| Townhouse lot | 3,500 sq ft | 0.080 | 325 m² |
| Typical suburban lot | 10,890 sq ft | 0.250 | 1,012 m² |
| Large suburban lot | 21,780 sq ft | 0.500 | 2,023 m² |
| Standard acre lot | 43,560 sq ft | 1.000 | 4,047 m² |
| Rural homestead | 217,800 sq ft | 5.000 | 20,234 m² |
| Small farm parcel | 435,600 sq ft | 10.000 | 40,469 m² |
Acres to Other Units
Square Foot to Acres Conversion Table
Pre-calculated acre values for common square footage amounts.
| Square Feet | Acres | Hectares | Square Yards |
|---|---|---|---|
| 1,000 sq ft | 0.0230 | 0.0093 | 111.1 sq yd |
| 2,500 sq ft | 0.0574 | 0.0232 | 277.8 sq yd |
| 5,000 sq ft | 0.1148 | 0.0465 | 555.6 sq yd |
| 10,000 sq ft | 0.2296 | 0.0929 | 1,111.1 sq yd |
| 10,890 sq ft (1/4 acre) | 0.2500 | 0.1012 | 1,210.0 sq yd |
| 21,780 sq ft (1/2 acre) | 0.5000 | 0.2023 | 2,420.0 sq yd |
| 43,560 sq ft (1 acre) | 1.0000 | 0.4047 | 4,840.0 sq yd |
| 50,000 sq ft | 1.1478 | 0.4645 | 5,555.6 sq yd |
| 87,120 sq ft (2 acres) | 2.0000 | 0.8094 | 9,680.0 sq yd |
| 100,000 sq ft | 2.2957 | 0.9290 | 11,111.1 sq yd |
| 217,800 sq ft (5 acres) | 5.0000 | 2.0234 | 24,200.0 sq yd |
| 435,600 sq ft (10 acres) | 10.0000 | 4.0469 | 48,400.0 sq yd |
Frequently Asked Questions
How many square feet are in 1 acre?
Exactly 43,560 square feet. A square-shaped acre lot measures 208.71 ft x 208.71 ft. An acre covers roughly 91% of an American football field (which is 48,000 sq ft without end zones). In metric units, 1 acre = 4,046.86 square meters = 0.4047 hectares.
How big is a quarter-acre lot?
10,890 square feet (1,012 m²). A square quarter-acre lot measures 104.36 ft on each side. This is the most common suburban residential lot size in the United States. A typical 1,500-2,000 sq ft home on a quarter-acre lot leaves 8,890-9,390 sq ft of yard space.
How big is a half-acre lot?
21,780 square feet (2,023 m²). A square half-acre lot measures 147.58 ft per side. Half-acre lots are common in semi-rural suburban developments and provide substantial yard space for pools, gardens, and outbuildings.
How many acres is a football field?
1.32 acres including end zones. A full NFL field measures 360 ft x 160 ft = 57,600 sq ft = 1.32 acres. Without end zones (300 ft x 160 ft = 48,000 sq ft), it equals 1.10 acres. A soccer pitch ranges from 1.32 to 1.98 acres depending on dimensions.
How many acres is a typical house lot?
Between 0.05 and 0.50 acres for most residential properties. Urban row houses sit on 0.05-0.10 acres (2,178-4,356 sq ft). Standard suburban lots range from 0.15 to 0.25 acres (6,534-10,890 sq ft). Semi-rural properties run 0.50 to 2.0 acres (21,780-87,120 sq ft). Rural homesteads start at 5 acres (217,800 sq ft).
How many houses fit on 1 acre?
Between 2 and 8 houses, depending on lot size and local zoning. At 5 houses per acre (the U.S. suburban average), each lot gets about 8,712 sq ft (0.20 acres). Dense urban development fits 8-18 units per acre. Rural zoning may allow only 1-2 homes per acre.