# How many grams are in an ounce?

There are precisely 28.3495231 grams in one ounce. This number is commonly rounded to 28 for easier conversions. The gram is the base unit of mass or weight in the metric system, and the ounce is a unit of weight in the U.S. customary system.

To convert a measurement in ounces to an approximate number of grams, multiply it by the factor 28. Conversely, to convert a measurement in grams to ounces, divide it by the divisor 28. Although ounces are the preferred measurement in the United States, grams are used by most of the world and in all scientific applications.

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Q&A Related to "How many grams are in an ounce?"
 Regardless of what you are weighing there are 28 grams in one ounce. However, if you need this conversion for something with exact measurements you will want to use the exact measurement http://www.ask.com/web-answers/Reference/Other/how...
 1 ounce = 28.34952 grams. In this context, "ounce" means the unit of mass, not "fluid ounce" which is a unit of volume (typically of a liquid) http://wiki.answers.com/Q/How_many_grams_in_one_ou...
 There are 28.345 grams in one ounce. Have another question? ChaCha http://www.chacha.com/question/how-many-grams-are-...
 There are exactly 28.3495231 grams in one ounce,but when cooking many people round down to 28 grams http://www.kgbanswers.com/how-many-grams-in-one-ou...