Countries that use pounds and ounces:
United States of America (USA) , South Africa, United Kingdom (UK), Eire (ROI), India, Canada, Australia and most Commonwealth countries.
A rough guide when you are measuring liquids: 1 ml of water equals 1 gram, 1 litre of water weighs approx 1 kg - other liquids may differ.
Converting grams into ounces, the formula
To convert grams into ounces, multiply grams by .0353
59769 g = 2109.8457 oz
Answer = int(59769 * .0353) [2109 oz]
To convert ounces to pounds and ounces (rather than decimal fractions of a pound) requires a little more work
oz_start = 2109
lb_calc = int(oz_start/16) [therefore lb_calc == 131 lb]
oz_calc = 2109 - (lb_calc * 16) [therefore oz_calc = 13 oz]
Answer = lb_calc, oz_calc [131 lb, 13 oz]
Wikipedia links covering units of mass show/hide