# Ounce vs. Troy Ounce

Difference Between Ounce and Troy Ounce Ounce and troy ounce are units to measure weight. Ounce is approximately…

Difference Between Ounce and Troy Ounce

Ounce and troy ounce are units to measure weight. Ounce is approximately equal to 28 grams and other two systems for measuring weight are avoirdupois ounce and troy ounce.

Avoirdupois ounce is known as ounce and is common in many parts of the world. Troy ounce is used in measuring weight of precious metals. You may not realize but if you do not know the difference between them then you may be in loss while dealing in gold and silver.

1 avoirdupois ounce is equal to 437.5 grains or 28.35 grams and 1 avoirdupois pound has 16 ounces which is equal to 453.6 grams.

When you buy silver or gold you are paying for it in troy ounce and not in ounce and when you buy grocery then you pay for the weight in ounce. Troy ounce weighs 10% more than ounce and has approximately 31.1 grams while ounce has 28.35 grams.

Troy ounce was used in middle ages in Troyes France and is older unit of weight than ounce. Troy pound has 12 troy ounces while avoirdupois pound has 16 ounces.

We can convert grocery ounce into troy ounce by using the given formula

Regular ounceX0.912 = troy ounces

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