Acre to Square Feet Calculator
Type a value and the result updates instantly. 1 acre = 43,560 sq ft.
Same area in other units
| Unit | Value |
|---|
Bigha, biswa and killa change from state to state, so they are not included. Use your local land record for those.
Acre to Square Feet Calculator
Use this free calculator to convert acres to square feet in one step. Enter the area, pick your units and the answer appears instantly. The calculator also converts in the other direction, and it covers common Indian land units such as guntha, cent, kanal, marla and ground.
Quick answer: 1 acre = 43,560 square feet.
How to use the calculator
- Type the area in the Value box.
- Choose Acre in the From list.
- Choose Square Feet in the To list.
- Read the result. The table below it shows the same area in every other unit.
Use the swap button to convert square feet to acres.
Acre to square feet formula
The formula is simple:
Square feet = Acres × 43,560
To go back:
Acres = Square feet ÷ 43,560
Worked examples
- 2 acres × 43,560 = 87,120 sq ft
- 5 acres × 43,560 = 217,800 sq ft
- 0.5 acre × 43,560 = 21,780 sq ft
- 87,120 sq ft ÷ 43,560 = 2 acres
Acre to square feet conversion chart
| Acres | Square feet |
|---|---|
| 0.1 | 4,356 |
| 0.25 | 10,890 |
| 0.5 | 21,780 |
| 1 | 43,560 |
| 2 | 87,120 |
| 3 | 130,680 |
| 4 | 174,240 |
| 5 | 217,800 |
| 10 | 435,600 |
| 20 | 871,200 |
| 50 | 2,178,000 |
| 100 | 4,356,000 |
What is an acre?
An acre is a unit used to measure land. It comes from the Old English word aker, meaning open field. Traditionally it was the area one farmer could plough in a day with a pair of oxen. Today it is defined exactly:
- 1 acre = 43,560 square feet
- 1 acre = 4,840 square yards
- 1 acre ≈ 4,046.86 square metres
- 1 acre ≈ 0.4047 hectare
An acre has no fixed shape. A strip 660 ft × 66 ft is one acre, and so is a square of about 208.7 ft on each side.
Acre in other land units (India)
Land in India is measured in many local units. These values are fixed and widely used:
| 1 Acre equals | Value |
|---|---|
| Square feet | 43,560 |
| Square yards (gaj) | 4,840 |
| Square metres | 4,046.86 |
| Hectare | 0.4047 |
| Guntha | 40 |
| Cent / Decimal | 100 |
| Kanal | 8 |
| Marla | 160 |
| Ground | 18.15 |
Bigha, biswa and killa differ by state. The size of a bigha in Madhya Pradesh is not the same as in Uttar Pradesh, Rajasthan or Punjab, so no single conversion is correct everywhere. Check your state’s land records (khasra, khatauni or patwari records) for the local value.
Where acre to square feet conversion is used
- Buying or selling land: plot listings often give area in square feet while title documents use acres.
- Agriculture: farm size is recorded in acres, but fencing, irrigation and building plans need square feet.
- Real estate projects: layouts and FSI/FAR calculations are done in square feet.
- Property valuation and loans: banks and valuers ask for area in a consistent unit.
Frequently asked questions
1. How many square feet are in an acre?
There are 43,560 square feet in one acre.
2. How do I convert acres to square feet?
Multiply the number of acres by 43,560. For example, 3 acres × 43,560 = 130,680 sq ft.
3. How do I convert square feet to acres?
Divide the square feet by 43,560. For example, 21,780 ÷ 43,560 = 0.5 acre.
4. How many square feet are in half an acre?
Half an acre is 21,780 square feet.
5. How many square feet are in a quarter acre?
A quarter acre is 10,890 square feet.
6. How many acres is 1 square foot?
One square foot is about 0.000023 acre.
7. How many guntha are in an acre?
One acre is 40 guntha.
8. How many cents are in an acre?
One acre is 100 cents (also called decimals).
9. Is an acre the same everywhere?
The standard acre used in India, the US and the UK is 43,560 sq ft. Historic regional acres, such as the old Scottish and Irish acres, were larger, but they are rarely used now.
10. How many square feet are in a hectare?
One hectare is about 107,639 square feet, or about 2.471 acres.
