2斤是多少g？
2斤 = 1,000g
是1,000g，所以说成1,000g也没问题——四舍五入的误差在0.5%以内。
反过来，2g是多少斤？
2g = 0斤
计算公式: g = 斤 × 500
该数值前后的 斤 → g
0.2 斤100g
0.4 斤200g
0.6 斤300g
0.8 斤400g
1 斤500g
1.2 斤600g
1.4 斤700g
1.6 斤800g
1.8 斤900g
2 斤1,000g
2.2 斤1,100g
2.4 斤1,200g
2.6 斤1,300g
2.8 斤1,400g
3 斤1,500g
3.2 斤1,600g
3.4 斤1,700g
3.6 斤1,800g
3.8 斤1,900g
4 斤2,000g