West Bengal uses a distinct land unit scale where the Bengal Bigha is 14,400 sq ft — significantly smaller than the UP or Bihar bigha. Managed digitally through the Banglarbhumi portal under the West Bengal Land Reforms Act, local units include Bigha, Katha, Chatak, and Decimal.
In Kolkata, Howrah, Siliguri, and Durgapur, residential plot listings quote areas in Kathas (720 sq ft) and Chataks (45 sq ft).
Official West Bengal Unit Baseline
West Bengal revenue department conversion values:
- 1 Bigha (WB): 14,400 square feet (1,600 sq yards / 1,337.8 sq meters / 0.3306 acres).
- 1 Katha: 1/20th of a Bigha = 720 square feet (80 sq yards / 66.89 sq meters).
- 1 Chatak: 1/16th of a Katha = 45 square feet (5 sq yards).
- 1 Acre: 3.03 Bengal Bighas = 60.5 Kathas = 43,560 sq ft.
- 1 Decimal: 435.6 square feet. 1 Katha = 1.65 Decimals.
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