Unit Converter
Acres to Square Feet Converter
Convert acres to square feet instantly. 1 ac = 43560 ft². Free, no signup required.
Square Feet
43560 ft²
1 ac = 43560 ft²
Acres to Square Feet formula
ft² = ac × 43560An acre is a traditional unit of land area equal to 43,560 square feet. This factor comes from the historical definition: 1 acre = 1 chain × 10 chains, where 1 chain = 66 feet. Used globally in real estate, farming, and surveying.
Acres to Square Feet conversion table
| Acres (ac) | Square Feet (ft²) |
|---|---|
| 1 ac | 43560 ft² |
| 2 ac | 87120 ft² |
| 5 ac | 217800 ft² |
| 10 ac | 435600 ft² |
| 25 ac | 1089000 ft² |
| 50 ac | 2178000 ft² |
| 100 ac | 4356000 ft² |
| 250 ac | 1.08900e+7 ft² |
| 500 ac | 2.17800e+7 ft² |
| 1000 ac | 4.35600e+7 ft² |
When you need to convert acres to square feet
- Real estate: calculating property size in different units for listings or legal documents
- Farming and land management: converting field acreage to square footage for yield planning
- Construction: determining lot sizes and building coverage percentages
- Urban planning: zoning regulation compliance and land-use calculations
Frequently asked questions
Why is 1 acre exactly 43,560 square feet?
The acre originated as 1 furlong × 1 chain (660 feet × 66 feet). This equals 43,560 ft² and remains the official conversion worldwide.
How many acres is 1 square foot?
1 square foot is approximately 0.000023 acres. Since 1 acre = 43,560 ft², divide 1 by 43,560 to convert square feet back to acres.
When should I use acres instead of square feet?
Acres are standard for large land areas in real estate, farming, and surveying. Square feet suit smaller properties and buildings. Choose based on your industry convention.