Question: 1 acre how much bigha in bihar?
Answer: 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 = 4 decimal.