Convert Carats to Pounds
Convert Carats (ct) to Pounds (lb) instantly and accurately.
Conversion Formula
lb = ct × 0.0004409245244
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 Pounds
The avoirdupois pound (lb) is the primary unit of weight in the United States and United Kingdom for everyday use, equal to 16 ounces or exactly 453.59237 grams. It dominates American life: body weight, grocery produce, deli counter cuts, freight shipping costs, gym weights, and building material quantities are all measured in pounds and ounces. American recipes use pounds for meat and large quantities. The pound derives from the Roman 'libra pondo' (a pound by weight) - hence both the symbol 'lb' (from libra) and the British currency symbol '£'.
Quick Reference Table
| Carats (ct) | Pounds (lb) |
|---|---|
| 1 ct | 0.000440925 lb |
| 2 ct | 0.000881849 lb |
| 5 ct | 0.00220462 lb |
| 10 ct | 0.00440925 lb |
| 25 ct | 0.0110231 lb |
| 50 ct | 0.0220462 lb |
| 100 ct | 0.0440925 lb |