Convert Carats to Catties
Convert Carats (ct) to Catties (catty) instantly and accurately.
Conversion Formula
catty = ct × 0.0003311258278
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 Catties
The catty (also jin 斤 in Chinese) is a traditional unit of mass used across East and Southeast Asia, equal to 600 grams in its modern metric form. It was historically the standard unit of trade for goods at markets throughout China, Japan, Korea, and Southeast Asia for over a thousand years. Today the catty remains widely used in Chinese, Vietnamese, Malaysian, and Singaporean wet markets and grocery stores for weighing vegetables, meat, and fish. In Hong Kong, the catty (斤) is precisely 604.79 grams; in mainland China it is exactly 500 grams (half a kilogram).
Quick Reference Table
| Carats (ct) | Catties (catty) |
|---|---|
| 1 ct | 0.000331126 catty |
| 2 ct | 0.000662252 catty |
| 5 ct | 0.00165563 catty |
| 10 ct | 0.00331126 catty |
| 25 ct | 0.00827815 catty |
| 50 ct | 0.0165563 catty |
| 100 ct | 0.0331126 catty |