The avoirdupois pound ( 0.45359237 kilogram ) is used in :
United States of America (USA) , South Africa, United Kingdom (UK), Republic of Ireland (ROI) and many former British colonies.
The Japanese 1 yen coin has a mass of one gram. (lighter than the British penny (3.56 g), the United States cent (2.5 g) or the "Euro-cent" (2.30 g)).
How to Convert grams into ounces, the actual formula
Multiply the grams by 0.0353 to get ounces
68 g = 2.4004 oz
Answer = int(68 * .0353) [2 oz]
To convert ounces to pounds and ounces (rather than decimal fractions of a pound) use the following formula
oz_start = 2
lb_calc = int(oz_start/16) [therefore lb_calc == 0 lb]
oz_calc = 2 - (lb_calc * 16) [therefore oz_calc = 2 oz]
Answer = lb_calc, oz_calc [0 lb, 2 oz]
Wikipedia links covering units of mass show/hide