An acre is a traditional unit of land measurement deeply rooted in the history of the imperial system. Historically, it represented the area that could be plowed by one man with a team of oxen in a single day.
Mathematically, 1 acre = 43,560 ft2 = 4,046.8564224 m2 = 0.40468564224 ha. The standard shape of an acre is a rectangle 1 furlong x 1 chain, that is 660 ft × 66 ft. In practical terms, one acre is roughly equivalent to 16 tennis courts or two-thirds of a soccer field, making it a convenient measure in agriculture, real estate, and environmental planning.
Bigha is a non-SI, region-dependent unit. Let its local size be β m2 (varies by state or district). Since 1 acre = 4046.8564224 m2, the conversion follows:
Because β differs regionally, 1 bigha ≈ 0.25–0.63 acre in practice - always use the local value of β.
A bigha is a traditional unit of land measurement used across India, Bangladesh, and Nepal, yet it lacks a universal standard. Mathematically, 1 bigha = β m2, where β depends on regional definitions—ranging roughly from 1,250 to 6,772 m2.
Useful conversions for an amount B (in bigha):
Subdivisions such as katha or biswa also vary by locale. Therefore, when evaluating or trading land, always confirm the regional value of one bigha to ensure accurate assessment and comparison.
| Unit | 1 Acre |
|---|---|
| Square feet | 43560 sq ft |
| Square yard | 4840 sq yd |
| Square meters | 4046,85 sq mt |
| Square centimeters | 40468564,22 sq cm |
| Square kilometers | 0,004047 sq km |
| Square Inches | 6272640 sq in |
| Square Miles | 0,001563 sq mi |
| Hectare | 0,404686 ha |
| Guntha | 40 guntha |
| Bigha | 1.613 bigha |
| Biswa | 32.266695655 biswa |
| Gaj | 4886.921847668 gaj |
| Katha | 32.005906517 katha |
| Acre | Bigha |
|---|---|
| 1 Acre | 1.613 Bigha |
| 2 Acre | 3.226 Bigha |
| 3 Acre | 4.839 Bigha |
| 4 Acre | 6.452 Bigha |
| 5 Acre | 8.065 Bigha |
| 6 Acre | 9.678 Bigha |
| 7 Acre | 11.291 Bigha |
| 8 Acre | 12.904 Bigha |
| 9 Acre | 14.517 Bigha |
| 10 Acre | 16.13 Bigha |
| 11 Acre | 17.743 Bigha |
| 12 Acre | 19.356 Bigha |
| 13 Acre | 20.969 Bigha |
| 14 Acre | 22.582 Bigha |
| 15 Acre | 24.195 Bigha |
| 16 Acre | 25.808 Bigha |
| 17 Acre | 27.421 Bigha |
| 18 Acre | 29.034 Bigha |
| 19 Acre | 30.647 Bigha |
| 20 Acre | 32.26 Bigha |
| Aspect | Acre | Bigha |
|---|---|---|
| Where Is It Used? | Widely used in the United Kingdom, the United States, and internationally for real estate and agriculture. | Common in South Asia - primarily India, Bangladesh, and Nepal - with definitions varying by region. |
| Global Usage | Recognized globally and accepted in legal, agricultural, and geographic systems. | Mostly local in nature, seldom used in international land records or global datasets. |
| Standardization | 1 acre = 43,560 ft2 = 4,046.8564224 m2 = 0.40468564224 ha Defined precisely under the imperial system. | 1 bigha = β m2 Non-standardized; the value β varies regionally. |
| Conversion |
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| Area Measurement | Traditionally a rectangle of 1 furlong × 1 chain = 660 ft × 66 ft. | Varies by region; includes local subunits like katha and biswa, each with unique scales. |
| Measurement Consistency | Fixed and uniform across all regions; mathematically exact. | Inconsistent - typical β ranges from 1,250 to 6,772 m2. Always verify the local standard before conversion. |
There is no single standard because bigha is region-specific. Let 1 bigha = β m2 (defined locally). Since 1 acre = 4,046.8564224 m2, the general rule is: bigha = acres × (4,046.8564224 ÷ β). Always use the local β to compute accurately.
Yes-if the converter allows you to pick the correct region or β value. Accuracy hinges on using the proper local definition of bigha. Choose tools from reputable sources and verify which district/state standard they implement before relying on results.
No. Bigha is not standardized across South Asia. Its area β varies by jurisdiction (often between about 1,250 and 6,772 m²). Because β is locally defined, any conversion must cite the exact region to avoid error.
Not universally. Unlike the acre, which is fixed, the bigha changes by region. A universal factor would be misleading. For each transaction or analysis, identify the relevant locality, obtain its β, and apply: acres → bigha via (4,046.8564224 ÷ β).