Bihar follows a highly structured traditional land area system anchored around the Bihar Bigha (27,225 sq ft). Governed by the Bihar Land Reforms Act and managed digitally on the Bihar Bhumi portal, land records (Jamabandi) use Bigha, Katha, and Dhur alongside Decimal and Hectare.
Because a Bihar Katha (1,361.25 sq ft) is nearly double the size of a Bengal Katha (720 sq ft), understanding state-specific boundaries prevents financial loss during plot purchase in Patna, Gaya, Muzaffarpur, or Bhagalpur.
Official Bihar Land Unit Breakdown
Bihar revenue administration defines land area using the following standard conversion chain:
- 1 Bigha (Bihar): 27,225 square feet (3,025 sq yards / 2,529.3 sq meters / 0.625 acres).
- 1 Katha: 1/20th of a Bigha = 1,361.25 square feet (151.25 sq yards).
- 1 Dhur: 1/20th of a Katha = 68.06 square feet (7.56 sq yards).
- 1 Dhurki: 1/20th of a Dhur = 3.40 square feet.
- 1 Decimal (Dismil): 435.6 square feet (1/100th of an Acre). 1 Katha ≈ 3.125 Decimals.
- 1 Acre: 1.6 Bihar Bighas = 32 Kathas = 43,560 sq ft.
Checking Land Records on Bihar Bhumi
The Bihar Bhumi Jamabandi Portal allows landowners to check online Khatian, Register II, and Land Possession Certificates (LPC). In Jamabandi records, area is listed in Bigha-Katha-Dhur format or in Acres and Decimals.
To convert Jamabandi Decimals to Katha: Divide the decimal figure by 3.125. For example, 10 Decimals = 10 ÷ 3.125 = 3.2 Kathas (4,356 sq ft).
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