Acre to square feet converter
1 acre = 43,560 square feet
Exact conversion between acres and square feet, with a ready table, the formula and the Kerala thresholds (25 cents, 50 cents, 1 acre) you actually need it for.
1 acre = 43,560 square feet. Multiply acres by 43,560 to get square feet; divide square feet by 43,560 to get acres. A cent is exactly 1/100 acre (435.6 sq ft, 40.4686 m²) and an are is 100 m² (2.4711 cents), so 20.23 ares on a Kerala thandaper is 50 cents and 10.12 ares is 25 cents.
Exact factors (1 acre = 4,046.8564224 m², 1 are = 100 m²). Reviewed 19 September 2026 by J Group Consultancy, Ernakulam.
Formula: square feet = acres × 43,560 · acres = square feet × 0.000023
acres to square feet
| acres | square feet | square metres |
|---|---|---|
| 0.1 | 4,356 | 404.6856 |
| 0.25 | 10,890 | 1,011.71 |
| 0.5 | 21,780 | 2,023.43 |
| 0.75 | 32,670 | 3,035.14 |
| 1 | 43,560 | 4,046.86 |
| 1.5 | 65,340 | 6,070.28 |
| 2 | 87,120 | 8,093.71 |
| 2.5 | 1,08,900 | 10,117.14 |
| 3 | 1,30,680 | 12,140.57 |
| 4 | 1,74,240 | 16,187.43 |
| 5 | 2,17,800 | 20,234.28 |
| 10 | 4,35,600 | 40,468.56 |
| 25 | 10,89,000 | 1,01,171.41 |
| 50 | 21,78,000 | 2,02,342.82 |
| 100 | 43,56,000 | 4,04,685.64 |
Numbers that keep coming up in Kerala land paperwork
| Extent | Equals | Where it matters |
|---|---|---|
| 25 cents | 10.12 ares · 10,890 sq ft · 1,011.7 m² | Section 27A: no conversion fee up to 25 cents; 2025 affidavit route for Form 6 plots up to 25 cents not in the Data Bank |
| 50 cents | 20.23 ares · 21,780 sq ft · 2,023.4 m² | Form 6 limit — above 20.23 ares the application is Form 7 |
| 1 acre | 40.47 ares · 43,560 sq ft · 100 cents · 0.4047 ha | Section 27A slab changes above 1 acre |
| 1 are | 2.47 cents · 1,076.4 sq ft · 100 m² | The unit printed on the thandaper and basic-tax receipt |
| 1 hectare | 247.1 cents · 2.471 acres · 100 ares | Used in Data Bank entries and acquisition notifications |
Land units used in Kerala and India
| Unit | m² | cents | sq ft | Note |
|---|---|---|---|---|
| cent (cent) | 40.4686 | 1 | 435.6 | The everyday unit in Kerala and Tamil Nadu: 1/100 of an acre. |
| square foot (sq ft) | 0.092903 | 0.002296 | 1 | Used for house plans, flats and building permits. |
| are (are) | 100 | 2.4711 | 1,076.39 | The unit in Kerala revenue records (thandaper, basic-tax receipt, Ente Bhoomi resurvey). |
| acre (acre) | 4,046.86 | 100 | 43,560 | 100 cents. Used for estates, plantations and larger plots. |
| hectare (ha) | 10,000 | 247.1054 | 1,07,639.1 | 100 ares. Used in government notifications, land acquisition and the Data Bank. |
| square metre (m²) | 1 | 0.024711 | 10.7639 | Building rules (KMBR/KPBR) and fair-value notifications use square metres. |
| square yard (sq yd) | 0.836127 | 0.020661 | 9 | Also called gaj in north India; 9 square feet. |
| ground (ground) | 222.9673 | 5.5096 | 2,400 | Tamil Nadu (Chennai) unit: 2,400 square feet. |
| guntha (guntha) | 101.1714 | 2.5 | 1,089 | Karnataka / Maharashtra unit: 1,089 square feet, 1/40 of an acre. |
Questions about acres and square feet
How many square feet is 1 acre?
1 acre = 43,560 square feet. To convert, multiply the number of acres by 43,560. The reverse: 1 square foot = 0.000023 acres.
How many cents make an acre?
Exactly 100 cents make one acre (43,560 square feet). Half an acre is 50 cents, a quarter acre is 25 cents.
How many square feet is a 5-cent plot?
5 cents is 2,178 square feet (5 × 435.6). A 10-cent plot is 4,356 sq ft and a 3-cent plot is 1,306.8 sq ft. Building rules count coverage and floor-area ratio in square metres, so also note that 5 cents is 202.34 m².
Which unit should I use in a Form 6 / Form 7 application?
The Revenue eServices portal takes the extent as it appears in your land records — ares (and square metres for fractions). Convert your deed extent from cents to ares before filing: cents × 0.404686 = ares. If the deed and the thandaper disagree after the digital resurvey, resolve that first; see /services/real-estate/digital-resurvey.
Need the land converted, not just the number?
We handle Form 5, 6 and 7 land conversion, digital resurvey corrections and title checks across Kerala — for owners here and NRIs abroad.