1 Acre in Square Feet: The Complete Conversion Guide
If you are buying or selling land, one question comes up again and again: how many square feet are in an acre? The answer is fixed and worth memorising, because the acre is the most common large land unit in India. This guide gives you the exact conversion, along with acre to gaj, bigha, hectare and square metre, with simple examples.
1 acre in square feet
One acre equals 43,560 square feet. This is a fixed international value, so it is the same everywhere in India and the world. Whenever a plot is quoted in acres, multiply by 43,560 to get the area in square feet.
Acre conversions at a glance
| 1 acre equals | Value |
|---|---|
| Square feet | 43,560 sq ft |
| Square yards (gaj) | 4,840 sq yd |
| Square metres | about 4,047 sq m |
| Hectares | about 0.405 hectare |
| Guntha | 40 guntha |
| Kanal | 8 kanal |
| Cent | 100 cent |
Quick examples
These help you picture the size:
- Half an acre is 21,780 square feet.
- Two acres are 87,120 square feet.
- A 5 acre plot is 2,17,800 square feet.
- A quarter acre is 10,890 square feet.
To go the other way, divide the square feet by 43,560 to get acres. So 1,00,000 sq ft is about 2.3 acres.
Acre to gaj and bigha
Since one acre is 4,840 square yards, it is 4,840 gaj. The acre to bigha conversion depends on the state, because a bigha varies. As a rough guide, in states where a bigha is about 27,000 sq ft, roughly 1.6 bigha make an acre. In states with a smaller bigha, more bigha make an acre. Always confirm the local bigha value before converting.
Why the acre matters for buyers
The acre is the standard unit for larger plots, farm land and township land. Developers describe project sizes in acres, and agricultural deals are often quoted in acres or bigha. Knowing the exact square feet lets you compare a per-acre price with a per-square-foot rate, and check that the land area on paper matches what you are paying for. This is essential when buying plots and land, and it pairs with understanding the other land measurement units in India.
Common acre mistakes to avoid
The acre itself never changes, always 43,560 square feet, but mistakes still happen in deals. The most common is mixing the acre with local units. A dealer may quote a price per acre for land that is actually recorded in bigha, and the two do not match unless you convert carefully. Another error is assuming an acre is a neat square. An acre is an area, not a shape, so a one-acre plot can be long and narrow or almost square, which changes how usable it is. A third slip is forgetting that the registered area may differ from what a broker claims, so trust the papers over the pitch. When comparing two plots, convert both to the same unit, ideally square feet, before you compare the price, since a plot priced per acre and another priced per square foot cannot be compared until they share a unit.
A quick memory trick
If you remember just two numbers, you can handle most acre conversions on the spot: an acre is 43,560 square feet and 4,840 square yards. From there, halve for half an acre, double for two acres, and divide square feet by 43,560 to get acres. That is usually all you need at a site visit to sanity-check what a seller tells you.
Frequently asked questions
How many square feet are in 1 acre?
One acre equals exactly 43,560 square feet. This is a fixed value, the same across India and worldwide.
How many square yards or gaj are in an acre?
One acre equals 4,840 square yards, also called 4,840 gaj, since one square yard is 9 square feet.
How many square metres are in an acre?
One acre is about 4,047 square metres. To convert acres to square metres, multiply by roughly 4,047.
How many acres are in a hectare?
One hectare is about 2.47 acres. Conversely, one acre is about 0.405 hectares.
How many bigha make an acre?
It depends on the state, because a bigha varies. Where a bigha is about 27,000 sq ft, roughly 1.6 bigha make an acre. Confirm the local bigha value first.
How many guntha are in an acre?
Forty guntha make one acre, since one guntha is 1,089 square feet.
How do I convert square feet to acres?
Divide the number of square feet by 43,560. For example, 87,120 sq ft divided by 43,560 equals 2 acres.
How big is a half acre in square feet?
Half an acre is 21,780 square feet. A quarter acre is 10,890 square feet.
The acre to square feet conversion is one number worth remembering: 43,560. With it, you can convert any land deal into a form you can compare and verify. When a plot is quoted in acres, always work out the square feet and match it against the papers before you compare prices or pay anything. If you want help sizing up a land deal anywhere in India, our team is happy to guide you through the numbers.
