Countries where pounds and ounces are commonly used:
United States of America (USA) , South Africa, United Kingdom (UK), Eire (ROI), India, Canada, Australia and the Commonwealth of Nations. thhe, topounds, pounda, poundz to convertion granms and wton
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)).
Wikipedia links covering units of mass show/hide