2근是多少g？
2근 = 1,200g
是1,200g，所以说成1,200g也没问题——四舍五入的误差在0.5%以内。
反过来，2g是多少근？
2g = 0근
计算公式: g = 근 × 600
该数值前后的 근 → g
0.2 근120g
0.4 근240g
0.6 근360g
0.8 근480g
1 근600g
1.2 근720g
1.4 근840g
1.6 근960g
1.8 근1,080g
2 근1,200g
2.2 근1,320g
2.4 근1,440g
2.6 근1,560g
2.8 근1,680g
3 근1,800g
3.2 근1,920g
3.4 근2,040g
3.6 근2,160g
3.8 근2,280g
4 근2,400g