As there are people using kilograms, pounds and stones, here is some conversion assistance:

kg to stones:

1 kg = 2.204lb
5kg = 11.02 lb
10 kg = 1 stone 8.04 lb

kg to pounds:

1 kg = 2lb 3.27 oz
5 kg = 11 lb 0.36 oz
10 kg = 22 lb 0.73 oz