jeff9705 wrote:apparently your site states that 74oz is 2.302 kg as well as 2.302 g. would upload screen shot but don't know how. how do we know that your other conversions are not flawed as well.
The ounce conversions for mass are correct. Note there are 2 ounce designations, the Avoirdupois and Troy ounces. The standard ounce for weight used here in the USA is the Avoirdupois ounce, where 1 oz = 28.349 523 125 grams exactly.
Your looking at the Troy ounce, where 1 ounce = 31.103 476 8 grams exactly. The Troy ounce is used worldwide but almost exclusively for precious metals.
See:
http://en.wikipedia.org/wiki/Ounce