Convert Carats to Ounces
Convert Carats (ct) to Ounces (oz) instantly and accurately.
Conversion Formula
oz = ct × 0.00705479239
About Carats
A metric carat (ct or CD) is exactly 200 milligrams (0.2 g), the universal standard for weighing gemstones. Established internationally in 1907, it replaced fractionally different regional carat weights previously used in different countries. The total weight of a diamond or colored gemstone is always expressed in carats: a 1.00 ct diamond of excellent cut and color can command over $5,000. The Cullinan diamond, the largest gem-quality rough diamond ever found, weighed 3,106.75 carats.
About Ounces
The avoirdupois ounce (oz) is 1/16 of a pound, equal to approximately 28.35 grams. It is the everyday ounce used in the United States and United Kingdom for food portions, household quantities, and general trade. US food packages, recipe measurements, and nutrition labels reference ounces; a standard stick of butter is 4 oz, a can of soup typically 10.75 oz, and a baseball weighs 5-5.25 oz. Unlike the troy ounce (31.10 g) used for precious metals, the avoirdupois ounce (28.35 g) is lighter.
Quick Reference Table
| Carats (ct) | Ounces (oz) |
|---|---|
| 1 ct | 0.00705479 oz |
| 2 ct | 0.0141096 oz |
| 5 ct | 0.035274 oz |
| 10 ct | 0.0705479 oz |
| 25 ct | 0.17637 oz |
| 50 ct | 0.35274 oz |
| 100 ct | 0.705479 oz |