20근是多少g？
20근 = 12,000g
是12,000g，所以說成12,000g也沒問題——四捨五入的誤差在0.5%以內。
反過來，20g是多少근？
20g = 0근
計算公式: g = 근 × 600
該數值前後的 근 → g
2 근1,200g
4 근2,400g
6 근3,600g
8 근4,800g
10 근6,000g
12 근7,200g
14 근8,400g
16 근9,600g
18 근10,800g
20 근12,000g
22 근13,200g
24 근14,400g
26 근15,600g
28 근16,800g
30 근18,000g
32 근19,200g
34 근20,400g
36 근21,600g
38 근22,800g
40 근24,000g