Convert ounce (troy) to carat
Here you can quickly calculate how many carat fit in one ounce (troy).
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- 1 oz t = 155.517384 ct
- 1 ct = 0.00643 oz t
Example: ounce (troy) to carat
- 1 ounce (troy) = 155.517384 carat
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
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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.
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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:
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142 ounce (troy) equals 11 000 carat.
Correct answer: 142 ounce (troy) = 22 100 carat.
17.2 carat equals 0.0553 ounce (troy).
Correct answer: 17.2 carat = 0.111 ounce (troy).
13 ounce (troy) equals 3 030 carat.
Correct answer: 13 ounce (troy) = 2 020 carat.
14.7 carat equals 0.0945 ounce (troy).
Correct answer: 14.7 carat = 0.0945 ounce (troy).