120근是多少g？
120근 = 72,000g
是72,000g，所以說成72,000g也沒問題——四捨五入的誤差在0.5%以內。
反過來，120g是多少근？
120g = 0근
計算公式: g = 근 × 600
該數值前後的 근 → g
30 근18,000g
40 근24,000g
50 근30,000g
60 근36,000g
70 근42,000g
80 근48,000g
90 근54,000g
100 근60,000g
110 근66,000g
120 근72,000g
130 근78,000g
140 근84,000g
150 근90,000g
160 근96,000g
170 근102,000g
180 근108,000g
190 근114,000g
200 근120,000g
210 근126,000g
220 근132,000g