Convert ounce (troy) to carat

Here you can quickly calculate how many carat fit in one ounce (troy).

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Conversion from ounce (troy) to carat example

Starting value Increment Accuracy

To convert ounce (troy) to carat, multiply by 155.517384.

1 oz t = 155.517384 ct

Example: 1 ounce (troy) = 155.517384 carat

The everyday avoirdupois ounce is about 28.35 g, but precious metals are priced in troy ounces of about 31.10 g. An 'ounce of gold' is nearly 10% heavier than an ounce of flour. Use troy ounces for gold and silver, the regular ounce for everything else.
The carat used for gemstones is a unit of mass: exactly 0.2 g, so a 5-carat diamond weighs 1 gram. The karat used for gold is something else entirely, a purity scale where 24k is pure gold and 18k is 75% gold. The two cannot be converted into each other.

Score: 0

216 ounce (troy) equals 3.36e+4 carat.

Correct answer: 216 ounce (troy) = 3.36e+4 carat.

7.7 ounce (troy) equals 2.39e+3 carat.

Correct answer: 7.7 ounce (troy) = 1.2e+3 carat.

201 carat equals 0.646 ounce (troy).

Correct answer: 201 carat = 1.29 ounce (troy).