Acres to Square Feet Converter
1 acre = 43,560 square feet
1 acre equals 43,560 square feet
How to convert acres to square feet
Area factors are squared length factors: 1 ft² = (0.3048 m)². The acre here uses international feet; historic US survey acres differ slightly.
ft² = ac × 87120/2One acre is 87120/2 square feet, so a single multiplication converts any value.
435,600 ft² = 10 × 87120/2Acres to square feet conversion table
Common values in acres, converted to square feet.
| Acres (ac) | Square feet (ft²) |
|---|---|
| 1 | 43,560 |
| 2 | 87,120 |
| 3 | 130,680 |
| 4 | 174,240 |
| 5 | 217,800 |
| 10 | 435,600 |
| 20 | 871,200 |
| 25 | 1,089,000 |
| 50 | 2,178,000 |
| 100 | 4,356,000 |
| 250 | 10,890,000 |
| 500 | 21,780,000 |
| 1,000 | 43,560,000 |
About these units
acreac
Exactly 4,840 square yards, or 43,560 square feet. The customary land unit.
Reference: Derived from the international yard (1959).
square footft²
The area of a square one foot on each side. The standard unit for US floor area.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.