How many g is 20 ct?
20 ct = 4 g
It is 4 g, so saying 4 g is fine — rounding is within 0.5%.
And how many ct is 20 g?
20 g = 100 ct
Formula: g = ct × 0.2
ct to g around this value
2 ct0.4g
4 ct0.8g
6 ct1.2g
8 ct1.6g
10 ct2g
12 ct2.4g
14 ct2.8g
16 ct3.2g
18 ct3.6g
20 ct4g
22 ct4.4g
24 ct4.8g
26 ct5.2g
28 ct5.6g
30 ct6g
32 ct6.4g
34 ct6.8g
36 ct7.2g
38 ct7.6g
40 ct8g