Katha (unit)

Katha or Biswa is a unit of area mostly used for land measurement in India, Nepal, and Bangladesh. After metrication in the mid-20th century by these countries, the unit became officially obsolete. But this unit is still in use in much of Bangladesh, Northern India, Eastern India and Nepal. The measurement of katha varies significantly from place to place.
In Purvanchal, 1 Katha = or 151.25 square yard. One Bigha is made up of 5 to 20 Katha. Katha is divided into 20 Dhur and Dhur is subdivided into 20 Dhurki.

Bangladesh

In Bangladesh, one katha is standardized to, and 20 katha equals 1 bigha.

1 Katha = 720 sq. feet = 66.88 sq. metre = 1.652 Decimal
1 Bigha = 20 Katha = 14,400 square feet = 1,338 sq m = 1,600 sq yard
1 Acre = 3.025 Bigha = 60.5 Katha = 4,047 square metre
1 Hectare = 2.47 Acre = 7.475 Bigha = 149.5 Katha
1 Katha = 16 Chattak
India

Assam

In Assam, 1 Katha is equal to 2,880 ft² and 1 Bigha = 5 Katha; 1 bigha = 14,400 ft² and in lower assam such as cachar it is 720 square feet.

Bihar

In Bihar, one Katha may vary from 720 to 3,267 square feet. 1 Bigha = 20 Katha. One katha is divided in 20 dhur. One dhur is subdivided in 20 dhurki. The origin of the term and measurement unit was during the Pala Empire. 1 Decimal = 435.6 square feet & 1 Acre = 100 decimal.

In Patna & Arrah, 1 Katha is equal to 1,361.25 ft² or 3.125 decimal.
* 1 Hectare = 3.95 bigha = 79 Katha
* 1 Acre = 1.6 bigha = 32 Katha
* 1 Bigha = 27,225 ft² = 20 Katha
* 1 Katha = 1,361.25 ft² = 20 dhur
* 1 Dhur = 68.0625 ft² = 20 Dhurki
In Bettiah, 1 Katha = 7.5 decimal = 3,267 ft² and 1 bigha = 65,340 ft²
In Chhapra, 1 Katha = 4 decimal = 1,742.4 ft² and 1 bigha = 34,848.0 ft²
In Hajipur, 1 Katha = 1,901.25 ft² and 1 Bigha = 38,025 ft².
Jharkhand

In Jharkhand, 1 Katha ranges from 720 to 2535 square feet. In Ranchi, 1 Katha is equal to 720 ft². 1 bigha is equal to 20 Katha; 1 bigha = 14,400 ft².

Punjab

In Punjab and Haryana, Katha is known as Biswa. 1 Bigha = 20 Biswa and 1 Biswa = 20 Biswansi.

1 Acre = 2 bigha = 4,840 square yard
1 Bigha = 2,420 square yard
1 biswa = 121 square yard
1 biswansi = 6.05 square yard
Uttar Pradesh

In Uttar Pradesh, Katha is also known as Biswa. One Katha is equal to 1,361.25 ft² or 151.25 square yard or 126.46 square metre. One Bigha in UP can range from 5 to 20 Katha.
In Western UP, 1 Bigha can be 5.0 Katha or 6.6667 Katha. In Eastern UP, 1 Bigha is 20 Katha.

1 Katha or 1 Biswa = 20 Dhur or 20 Biswansi
1 Dhur = 1 Biswansi
1 Dhur = 20 Dhurki
1 Katha = 3.125 Decimal
1 Acre = 100 Decimal
1 Acre = 32 Katha
West Bengal

In West Bengal, 1 Katha is equal to 720 ft². 1 bigha is equal to 20 Katha; 1 bigha = 14,400 ft².
1 Acre = 3.025 Bigha, 1 katha= 16 chatak, 1 chatak=45 sq.ft

Nepal

In Nepal, 1 Katha is equivalent to 338.55 m² With Manoj Chhetri