1,000ct是多少g？
1,000ct = 200g
是200g，所以说成200g也没问题——四舍五入的误差在0.5%以内。
反过来，1,000g是多少ct？
1,000g = 5,000ct
计算公式: g = ct × 0.2
该数值前后的 ct → g
100 ct20g
200 ct40g
300 ct60g
400 ct80g
500 ct100g
600 ct120g
700 ct140g
800 ct160g
900 ct180g
1,000 ct200g
1,100 ct220g
1,200 ct240g
1,300 ct260g
1,400 ct280g
1,500 ct300g
1,600 ct320g
1,700 ct340g
1,800 ct360g
1,900 ct380g
2,000 ct400g