<P> This unit is still in use in much of Bangladesh and Eastern India, but the size varies significantly from place to place . In the Indian state of Bihar, one katha may vary from 750 ft2 to 2000 ft2 . Also this can be 32 by 30 feet in length and breadth respectively . </P> <P> In North Bihar and Patna, 1 Kattha is generally equal to 1361 ft2. 20 Kathas equals 1 Bigha . One katha is further subdivided in 20 dhur . One dhur is further subdivided in 20 dhurki. 1 hectare = 2.4712 acre or 4 bighas approx; 1 acre = 1.6 bighas or 32 kathas; 1 bigha = 20 kathas; 1 katha = 20 dhoor; 1 dhoor = 6.25 or 6.5 haath; 1 katha = 1.65 decimal . </P> <P> 1 decimal in Bihar equals to 435.56 sq feet . </P> <P> In Assam 1 Kattha is generally equal to 2880ft2 . In West Bengal 1 katha is equal to 720ft2 </P>

1 dismil is equal to sq feet in jharkhand