Countries using pounds and ounces:
The US, UK, ROI, SA, India, Canada, Australia and the remaining Commonwealth of Nations.
A rough guide when you are measuring liquids: 1 ml of water equals 1 gram, 1 litre of water weighs approx 1 kilo - other liquids may differ.
Formula to convert grams into ounces
Grams x 0.0353 = ounces
151 g = 5.3303 oz
Answer = int(151 * .0353) [5 oz]
The maths used to convert ounces to pounds and ounces is shown below
oz_start = 5
lb_calc = int(oz_start/16) [therefore lb_calc == 0 lb]
oz_calc = 5 - (lb_calc * 16) [therefore oz_calc = 5 oz]
Answer = lb_calc, oz_calc [0 lb, 5 oz]
Wikipedia links covering units of mass show/hide