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To convert grams to ounces, divide by 28.3495. So 100 g ÷ 28.3495 = 3.527 oz, and 500 g = 17.637 oz. A handy approximation: divide grams by 28 for a quick estimate that's accurate to within 2%.
Food portions in the US are commonly expressed in ounces, while European products list weight in grams. A 200 g block of cheese is about 7 oz. A 300 g chicken breast is roughly 10.6 oz. This conversion appears on every supermarket package comparison between US and imported goods.
Did you know? France introduced the metric system in 1795, making it the world's first metrified country. The gram has been the standard mass unit for science and trade in most of the world ever since, while ounces persist mainly in the US and for precious metals.
Shipping parcels internationally often requires weight in ounces or pounds for US-based carriers like USPS and UPS. Food manufacturers exporting from Europe to the US must label products in ounces. Personal shoppers comparing cosmetics or supplements between regions use this conversion frequently.