Troy Ounces to Carats (oz t to ct) Converter
1 Troy Ounce equals 155.5174 Carats (1 oz t = 155.5174 ct). Convert Troy Ounces to Carats with formula, table, and examples.
One troy ounce equals approximately 155.5 carats. Both units measure precious materials: the troy ounce prices gold and silver at exchanges, while the carat measures gemstones at jewelers. A one-troy-ounce gold coin contains about 155 carats of gold, and a 155-carat diamond would weigh one troy ounce.
How to Convert Troy Ounces to Carats
- Take your value in Troy Ounces
- Multiply by 155.517384
- Read the result in Carats
Common Troy Ounces to Carats Conversions
| Troy Ounces (oz t) | Carats (ct) | Status |
|---|---|---|
| 0.1 oz t | 15.552 ct | |
| 0.25 oz t | 38.879 ct | |
| 0.5 oz t | 77.759 ct | |
| 1 oz t | 155.517 ct | |
| 2 oz t | 311.035 ct | |
| 5 oz t | 777.587 ct | |
| 10 oz t | 1,555.174 ct | |
| 25 oz t | 3,887.935 ct | |
| 50 oz t | 7,775.869 ct | |
| 100 oz t | 15,551.738 ct | |
| 250 oz t | 38,879.346 ct | |
| 500 oz t | 77,758.692 ct | |
| 1,000 oz t | 155,517.384 ct |
Good to Know About Troy Ounces to Carats Conversion
The troy ounce and carat are the two pillars of the luxury goods measurement system. Gold is priced per troy ounce; diamonds are priced per carat. A single piece of fine jewelry may involve both units simultaneously, with the gold band measured in fractions of troy ounces and the gemstone measured in carats. The factor of 155.5 connects these two units at the jeweler's workbench.
Troy Ounces to Carats: What You Need to Know
Luxury jewelry combining gold and gemstones requires both units. A gold ring weighing 0.2 troy ounces (about 6.2 grams) may be set with a 1-carat diamond, and jewelers must track both metals (in troy ounces) and stones (in carats) in their inventory.
What is a Troy Ounce? oz t
A troy ounce is a unit of mass used for precious metals such as gold, silver, and platinum. It equals exactly 31.1034768 grams, about 10% heavier than the common avoirdupois ounce.
Learn more about Troy Ounce →What is a Carat? ct
A carat is a unit of mass equal to exactly 200 milligrams (0.2 grams), used for measuring gemstones and pearls. Adopted internationally in 1907 by the Fourth General Conference on Weights and Measures.
Learn more about Carat →Going the other way? Use our Carats to Troy Ounces converter.
Troy Ounces to Carats FAQ
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One troy ounce equals approximately 155.517 carats. This is 31.1035 grams divided by 0.2 grams per carat.
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Multiply troy ounces by 155.5. For example, 0.5 troy ounces equals about 77.8 carats.
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In the jewelry industry, where precious metals are tracked in troy ounces and gemstones in carats. Jewelers need both units for inventory management and pricing.
Non-Frequently Asked Questions About Troy Ounces to Carats
Questions nobody should ask - but someone did.
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A troy ounce of gold is worth roughly $2,200. 155 carats of gem-quality diamonds could be worth anywhere from $155,000 to over $15 million depending on quality. Diamond beats gold by at least 70 to 1 in value per unit weight, which is why engagement rings use diamond for the impressive stone and gold merely for the band.
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Several diamonds exceed 155 carats. The Hope Diamond is 45.52 carats; the Cullinan I (Great Star of Africa) is 530 carats. A 155-carat diamond would be extraordinarily valuable and famous, worth somewhere between $20 million and $200 million depending on clarity and color.
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You get one troy ounce (155.5 carats) of gold in whatever shape your mold provides. Gold is too soft and dense to make a convincing diamond imitation regardless of shape. The exercise would waste a $2,200 coin to produce something worth exactly $2,200, minus the cost of the mold and your time.
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Need the reverse? Use our Carats to Troy Ounces converter. See all Weight & Mass converters.