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Convert ounce (troy) to carat

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

- scroll: formula · table · questions -

  • 1 oz t = 155.517384 ct
  • 1 ct = 0.00643 oz t

Ounce (troy) to carat conversion table

ounce (troy) carat
1 155.517384
2 311.034768
5 777.58692
10 1555.17384
20 3110.34768
50 7775.8692
100 15551.7384

Ounce (troy) to carat formula

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

1 oz t = 155.517384 ct
Example: 1 ounce (troy) = 155.517384 carat

Common mass conversion mistakes

  • 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.

Quick ounce (troy) and carat conversion quiz

Score: 0

3.8 carat equals 0.0244 ounce (troy).

Correct answer: 3.8 carat = 0.0244 ounce (troy).

14.8 ounce (troy) equals 1.15e+3 carat.

Correct answer: 14.8 ounce (troy) = 2.3e+3 carat.

3.9 ounce (troy) equals 364 carat.

Correct answer: 3.9 ounce (troy) = 607 carat.

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