**A single ounce is approximately equivalent to 28.349523125 grams.** An ounce, which is 1/16 of a pound, is a US standard unit of weight, whereas a gram is a common unit of mass measurement in the metric system.

16 ounces is equivalent to one pound. Converting pounds to grams can be done by first converting ounces to pounds, then converting pounds to grams. One pound is equal to approximately 453.59237 grams.

The calculation is as follows: 1 ounce * (1 pound / 16 ounces) * (453.59237 grams / 1 pound) = 28.349523125 grams.

If such a degree of precision is not required in the conversion, the calculation can be approximated because 1 pound is approximately equal to 454 grams. In this way, 1 ounce * (1 pound / 16 ounces) * (454 grams / 1 pound) = 28.375 grams, which has an error of 0.025476875 grams from the original calculation, or an error of less than 0.09 percent.