5斤是多少g？
5斤 = 2,500g
是2,500g，所以说成2,500g也没问题——四舍五入的误差在0.5%以内。
反过来，5g是多少斤？
5g = 0斤
计算公式: g = 斤 × 500
该数值前后的 斤 → g
0.5 斤250g
1 斤500g
1.5 斤750g
2 斤1,000g
2.5 斤1,250g
3 斤1,500g
3.5 斤1,750g
4 斤2,000g
4.5 斤2,250g
5 斤2,500g
5.5 斤2,750g
6 斤3,000g
6.5 斤3,250g
7 斤3,500g
7.5 斤3,750g
8 斤4,000g
8.5 斤4,250g
9 斤4,500g
9.5 斤4,750g
10 斤5,000g