Acre to square feet: exact factor and conversion table
1 acre = 43560 square feet
The acre and the square foot are international standard units, so this conversion is the same in every state. It does not depend on a local scale.
Open in the calculatorExact factor
1 acre = 43,560 square feet.
The calculator opens this with the Madhya Pradesh standard-units choice. Standard-unit conversions are the same in every state.
How to convert
square feet = acre amount × 43560.
Example: 5 acres × 43560 = 217800 square feet.
To convert back, divide the number of square feet by 43560.
Conversion table
| acres | square feet |
|---|---|
| 1 acre | 43560 square feet |
| 2 acres | 87120 square feet |
| 5 acres | 217800 square feet |
| 10 acres | 435600 square feet |
| 20 acres | 871200 square feet |
| 100 acres | 4356000 square feet |
Local units
Looking for Bigha, Guntha, Cent or Katha? Their size varies by place, so use the guide for your state.
Sources and definitions
- Handbook 44 (2026), Appendix C: General Tables of Units of Measurement
National Institute of Standards and Technology
Appendix C, printed C-23 / PDF p.23
Document titles retain their original language. These are the standard definitions of the units.