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Convert carat to ounce (troy)

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

- scroll: formula · table · questions -

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

Carat to ounce (troy) conversion table

carat ounce (troy)
1 0.00643
2 0.01286
5 0.032151
10 0.064301
20 0.128603
50 0.321507
100 0.643015

Formula to convert carat to ounce (troy)

To convert carat to ounce (troy), multiply by 0.00643.

1 ct = 0.00643 oz t
Example: 1 carat = 0.00643 ounce (troy)

Common mistakes in mass conversion

  • 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 carat to/from ounce (troy) conversion quiz

Score: 0

185 carat equals 1.19 ounce (troy).

Correct answer: 185 carat = 1.19 ounce (troy).

70 ounce (troy) equals 1.63e+4 carat.

Correct answer: 70 ounce (troy) = 1.09e+4 carat.

195 ounce (troy) equals 3.03e+4 carat.

Correct answer: 195 ounce (troy) = 3.03e+4 carat.

152 carat equals 1.95 ounce (troy).

Correct answer: 152 carat = 0.977 ounce (troy).

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