Assam Land Measurement Simplified: Bigha, Katha, Lessa, Puwa 20Ls=1Katha5Katha=1Bigha100Ls=1Bigha25Ls=1Puwa 100Ls=4Puwa4Puwa=1BighaNote:- 1 BIGHA = 5 KATHA = 100 LESSA = 4 PUWA