How to convert carats to pounds
To convert a measurement in carats to pounds, multiply the value by 0.000440924524. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 ct to pounds: 5 × 0.000440924524 = 0.002204622622 lb.
What is a carat?
A carat is a unit of mass for gemstones equal to exactly 200 milligrams (0.2 grams). The carat takes its name from the carob seed, once used as a counterweight for weighing gems. The metric carat of exactly 200 mg was adopted internationally in the early 20th century to standardize the gem trade.
Common uses of carats include: Diamond and gemstone weight; Jewelry pricing and grading; Pearl and precious stone trading; Gemological certification.
What is a pound?
A pound is an imperial and US customary unit of mass equal to 16 ounces or exactly 0.45359237 kilograms. The pound derives from the Roman 'libra' (hence the symbol 'lb'). The international avoirdupois pound was fixed at exactly 0.45359237 kg by the 1959 international yard and pound agreement between English-speaking nations.
Common uses of pounds include: Body weight in the US and UK; Grocery and produce pricing in the US; Bodybuilding and weightlifting loads; Shipping weights for parcels in the US.
Carats to pounds worked examples
Here are some common values converted:
1 ct = 0.000440924524 lb 5 ct = 0.002204622622 lb 10 ct = 0.004409245244 lb 50 ct = 0.022046226218 lb 100 ct = 0.044092452437 lb
Frequently asked questions
How many pounds are in one carat?
One carat (ct) equals 0.000440924524 pounds (lb). Multiply any value in carats by 0.000440924524 to convert to pounds.
How do I convert carats to pounds?
Multiply the value in carats by 0.000440924524. For example, 5 ct × 0.000440924524 = 0.002204622622 lb.
How do I convert pounds to carats?
Multiply the value in pounds by 2,267.9619, or divide by 0.000440924524. Use the swap button on the converter above to reverse the direction.
Is the carat to pound conversion exact?
Yes. Since 1959 the international pound is defined as exactly 0.45359237 kg, so all weight conversions between metric and avoirdupois units use exact factors.
What is the formula for carats to pounds?
The formula is: lb = ct × 0.000440924524. This comes from the definition of both units relative to the kilogram.