1石 = 4钧, 1钧 = 30斤,1斤 = 16两, 1两 = 24铢
1石 = 26400, 1钧 = 6600,1斤 = 220, 1两 = 13.8, 1铢 = 0.57 克
1斛 = 10斗, 1斗 = 10升, 1升 = 10合
1斛 =20450, 1斗 = 2045, 1升 = 204.5,1合 = 20.45 毫升
1丈 = 10尺, 1尺 = 10寸,1寸 = 10分
1丈 = 333, 1尺 = 33.3,1寸 = 3.33, 1分 = 0.333 厘米
大亩=0.6916市亩 小亩100步一亩,合0.2882市亩