How many grams are in one ounce?

Answer:
There are approximately 28.35 gm (grams) of the metric system in one oz (ounce) of the British Imperial and US Standards for weights and measures.

Another answer:

1 avoirdupois ounce = 28.35 gm
1 troy ounce = 31.10 gm (Troy ounces are used for weighing gold, and other precious metals.)

1 fluid ounce = 29.57 ml
1 fl. oz. = 28.34952 grams
Contributor: GL3N
First answer by ID1151573511. Last edit by ID2778450009. Question popularity: 92 [recommend question].