How to convert carats to ounces
To convert a measurement in carats to ounces, multiply the value by 0.00705479239. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 ct to ounces: 5 × 0.00705479239 = 0.03527396195 oz.
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 ounce?
An ounce is an imperial and US customary unit of mass equal to 1/16 of a pound or exactly 28.349523125 grams. The avoirdupois ounce descends from the Roman 'uncia' (one twelfth). It is distinct from the troy ounce used for precious metals, which is heavier at about 31.1 grams.
Common uses of ounces include: Food portions and recipe ingredients in the US; Postal and letter weights; Packaged goods net weight (cereal, snacks); Baby birth weights in the US.
Carats to ounces worked examples
Here are some common values converted:
1 ct = 0.00705479239 oz 5 ct = 0.03527396195 oz 10 ct = 0.070547923899 oz 50 ct = 0.352739619496 oz 100 ct = 0.705479238992 oz
Frequently asked questions
How many ounces are in one carat?
One carat (ct) equals 0.00705479239 ounces (oz). Multiply any value in carats by 0.00705479239 to convert to ounces.
How do I convert carats to ounces?
Multiply the value in carats by 0.00705479239. For example, 5 ct × 0.00705479239 = 0.03527396195 oz.
How do I convert ounces to carats?
Multiply the value in ounces by 141.747616, or divide by 0.00705479239. Use the swap button on the converter above to reverse the direction.
Is the carat to ounce 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 ounces?
The formula is: oz = ct × 0.00705479239. This comes from the definition of both units relative to the kilogram.