Measurment	State
1 Bigha = 20 Kattas	Bihar
1 Katta = 20 Dhur	Bihar
1 Dhur = 20 Dhurki	Bihar
1 Katta = 1361.25 Square Feet	Patna
1 Katta = 1901.25 Square Feet	Darbangha
1 Decimal = 435.6 Square Feet	Standard
100 Decimal = 1 Acre	Standard
40 Gunta = 1 Acre	AP, Telangana, Karnataka
1 Gunta = 121 Square Yard	AP, Telangana, Karnataka
4047 Sqm = 1 Acre	Standard