Acre to Square foot Converter
Type a value — the answer appears instantly. 1 ac = 43,560 ft².
Reviewed by the OmniCalc teamMethod verified 2026-07-01
43,560 square feet
= 4,046.86 m²= 0.404686 ha
equals 43,560 square feetFormula: ft² = ac × 43560
Acre to Square foot formula
ft² = ac × 43560
Convert 5 acres to square feet
- Start with 5 acres.
- Multiply by the conversion factor: 5 × 43,560 = 217,800.
- So 5 ac = 217,800 ft².
Acre to Square foot conversion table
| Acres (ac) | Square feet (ft²) |
|---|---|
| 0.01 ac | 435.6 ft² |
| 0.1 ac | 4,356 ft² |
| 0.25 ac | 10,890 ft² |
| 0.5 ac | 21,780 ft² |
| 1 ac | 43,560 ft² |
| 2 ac | 87,120 ft² |
| 3 ac | 130,680 ft² |
| 4 ac | 174,240 ft² |
| 5 ac | 217,800 ft² |
| 6 ac | 261,360 ft² |
| 7 ac | 304,920 ft² |
| 8 ac | 348,480 ft² |
| 9 ac | 392,040 ft² |
| 10 ac | 435,600 ft² |
| 15 ac | 653,400 ft² |
| 20 ac | 871,200 ft² |
| 25 ac | 1,089,000 ft² |
| 30 ac | 1,306,800 ft² |
| 40 ac | 1,742,400 ft² |
| 50 ac | 2,178,000 ft² |
| 75 ac | 3,267,000 ft² |
| 100 ac | 4,356,000 ft² |
| 250 ac | 10,890,000 ft² |
| 500 ac | 21,780,000 ft² |
| 1,000 ac | 43,560,000 ft² |
| 5,000 ac | 217,800,000 ft² |
| 10,000 ac | 435,600,000 ft² |
Unit definitions
What is a acre?
The acre is exactly 4840 square yards, about 4046.86 square metres or 0.405 hectares. It is the traditional unit for land area in the United States and United Kingdom. An acre was historically the area a yoke of oxen could plough in a day.
What is a square foot?
The square foot is the area of a one-foot square, exactly 0.09290304 square metres. It is the dominant unit for real estate, floor plans, and rent in the United States. One square metre is about 10.76 square feet.
Frequently asked questions
How many square feet are in one acre?
One acre equals 43,560 square feet (1 ac = 43,560 ft²).
How do I convert acres to square feet?
Multiply the value in acres by 43,560. For example, 10 ac × 43,560 = 435,600 ft².
Which is bigger — a acre or a square foot?
A acre is bigger: one acre contains 43,560 square feet.
Is this acre to square foot converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.