Convert Ounces to Carats
Convert Ounces (oz) to Carats (ct) instantly and accurately.
Conversion Formula
ct = oz × 141.7476156
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.
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.
Quick Reference Table
| Ounces (oz) | Carats (ct) |
|---|---|
| 1 oz | 141.748 ct |
| 2 oz | 283.495 ct |
| 5 oz | 708.738 ct |
| 10 oz | 1417.48 ct |
| 25 oz | 3543.69 ct |
| 50 oz | 7087.38 ct |
| 100 oz | 14174.8 ct |