There is no single bigha-to-acre factor, because the bigha itself changes by region. A pucca bigha of 3,025 sq yd, used in Rajasthan, eastern Uttar Pradesh and Bihar, is exactly 0.625 acre, so 1.6 bigha make an acre. The 14,400 sq ft bigha of West Bengal, Assam and Bangladesh is about 0.3306 acre. Nepal’s Terai bigha is larger than an acre, about 1.6736 acres, while the bigha in Haryana’s pre-consolidation records is 1/4.8 acre, about 0.2083. Pick the variant that matches your land record before you convert.
Formula
Bigha by region
The bigha is not the same everywhere. Values below are documented regional definitions with their sources; your land records or local revenue office decide which one applies. More about the bigha.
| Region | 1 bigha in acres | Definition |
|---|---|---|
| Pucca bigha (Rajasthan, eastern Uttar Pradesh, Bihar) | 0.625 | = 3,025 sq yd = 27,225 sq ft (165 ft × 165 ft) = 5/8 acre; 20 biswa or katha · Russ Rowlett, How Many? A Dictionary of Units of Measurement (UNC Chapel Hill), “bigha” |
| West Bengal | 0.330579 | = 1,600 sq yd = 14,400 sq ft = 20 katha · Russ Rowlett, How Many? A Dictionary of Units of Measurement (UNC Chapel Hill), “bigha” |
| Bangladesh | 0.330579 | = 1,600 sq yd = 14,400 sq ft = 20 katha (about 33 decimal) · Russ Rowlett, How Many? A Dictionary of Units of Measurement (UNC Chapel Hill), “bigha” |
| Assam | 0.330579 | = 5 katha = 100 lessa = 14,400 sq ft · Wikipedia: Bigha (regional sections and their references) |
| Haryana (pre-consolidation records) | 0.208333 | 4 bigha 16 biswa = 1 acre; 1 bigha = 20 biswa = 400 biswansi (square karam of 57.157 in) · Revenue Department, Government of Haryana (HALRIS Jamabandi): Units of Measurements |
| Nepal (Terai) | 1.6736 | = 20 kattha = 400 dhur = 72,900 sq ft ≈ 6,772.63 m² · Government of Nepal, Department of Land Management and Records: land unit conversion table |
Bigha to Acres conversion table (Pucca bigha (Rajasthan, eastern Uttar Pradesh, Bihar))
| Bigha | Acres |
|---|---|
| 0.25 bigha | 0.15625 ac |
| 0.5 bigha | 0.3125 ac |
| 1 bigha | 0.625 ac |
| 2 bigha | 1.25 ac |
| 3 bigha | 1.875 ac |
| 4 bigha | 2.5 ac |
| 5 bigha | 3.125 ac |
| 6 bigha | 3.75 ac |
| 7 bigha | 4.375 ac |
| 8 bigha | 5 ac |
| 9 bigha | 5.625 ac |
| 10 bigha | 6.25 ac |
| 15 bigha | 9.375 ac |
| 20 bigha | 12.5 ac |
| 25 bigha | 15.625 ac |
| 30 bigha | 18.75 ac |
| 40 bigha | 25 ac |
| 50 bigha | 31.25 ac |
| 60 bigha | 37.5 ac |
| 70 bigha | 43.75 ac |
| 75 bigha | 46.875 ac |
| 80 bigha | 50 ac |
| 90 bigha | 56.25 ac |
| 100 bigha | 62.5 ac |
| 250 bigha | 156.25 ac |
| 500 bigha | 312.5 ac |
| 1,000 bigha | 625 ac |
Where you’ll use it
This conversion comes up when a family holding recorded in bigha has to be compared with a government scheme, a bank valuation or a sale listing written in acres. Crop loan limits, land ceiling rules and subsidy forms are often set in acres or hectares, while the jamabandi, khatiyan or verbal description uses bigha. It also matters when relatives in different states compare land: 10 bigha in Bihar (6.25 acres on the pucca bigha) is almost twice 10 bigha in West Bengal (about 3.31 acres).
Tip: Do not assume the bigha from a neighboring state. If the record also gives area in acres, decimals or hectares, use that figure and treat the bigha as a description; if it does not, ask the circle or tehsil office which bigha the village uses.