28.4 grams. The rounding adds up quickly, and there’s comments here about people trimming borders off of paper maps. That .4 matters. Also, 16oz to 1lb.
Also matters when your buying things for recreational purposes. Especially when only buying points.
the point of knowing the rough conversion is to be able to do head-math to get a close number. I use 30 a lot of the time, b/c most of the time a close estimate is all I need.
if you're cutting off the borders of your map, by all means, use a calculator
And important that Troy is used for metals (31.1) That counts when 1g of gold is nearly $120usd
Grams are ounces. Ounces are pounds. Milligrams are grams. Micrograms are milligrams. Picograms are micrograms.