Unit Conversion: Know how to convert units in Maths and Physics by using appropriate formulas. Check table of conversion of units including different units of length, mass, temperature, etc.

There are many unit conversion calculators online, like this one from the U.S. Energy Information Association (EIA). (Don't be ashamed to find yourself in the Energy Kids section of the EIA's site.

A troy ounce is a unit of measurement for precious metal weight that dates to the Middle Ages. One troy ounce is equal to 31.10 grams.