How do you convert ounces to troy ounces??

I have a sterling bowl that weighs 12.0 ounces on my postal scale. How is that measured in troy ounces? Thanks for the help. I know a lot of you guys are up on how bullion is weighed.

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12 oz. in troy oz.
into the search box.
<< <i>28.8 grams to 31.1 grams troy I think >>
It's actually 28.35 grams per oz.
1 oz = .9115 troy oz
1oz troy = 1.097 oz
That should be enought significant digits.
--Jerry