One pound is 0.454 kilos, you do the math.
150pounds
1 cbm how many kgs
around 150pounds
4 kg = 8.81849 lb
104.32625
0.0454kg
45
how many kg are in g
86kgs = about 190 (189.598) lbs.
11 stone = 69.85 kilograms
12.7 stone = 80 kgs 649 grams
check your answer