Carats to Ounces Converter

Enter the weight in carats below to get the value converted to ounces.


Result in Ounces:

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1 ct = 0.007055 oz

Do you want to convert ounces to carats?

How to Convert Carats to Ounces

To convert a measurement in carats to a measurement in ounces, multiply the weight by the following conversion ratio: 0.007055 ounces/carat.

Since one carat is equal to 0.007055 ounces, you can use this simple formula to convert:

ounces = carats × 0.007055

The weight in ounces is equal to the weight in carats multiplied by 0.007055.

For example, here's how to convert 500 carats to ounces using the formula above.
ounces = (500 ct × 0.007055) = 3.527396 oz
conversion scale showing carats and equivalent ounces weight values

Carats and ounces are both units used to measure weight. Keep reading to learn more about each unit of measure.

What Is a Carat?

The carat is a unit of mass/weight equal to 200 milligrams.[1]

A carat is sometimes also referred to as a metric carat. Carats can be abbreviated as ct, and are also sometimes abbreviated as CD. For example, 1 carat can be written as 1 ct or 1 CD.

Learn more about carats.

What Is an Ounce?

One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[2]

The ounce is a US customary and imperial unit of weight. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.

Learn more about ounces.

Carat to Ounce Conversion Table

Table showing various carat measurements converted to ounces.
Carats Ounces
1 ct 0.007055 oz
2 ct 0.01411 oz
3 ct 0.021164 oz
4 ct 0.028219 oz
5 ct 0.035274 oz
6 ct 0.042329 oz
7 ct 0.049384 oz
8 ct 0.056438 oz
9 ct 0.063493 oz
10 ct 0.070548 oz
20 ct 0.141096 oz
30 ct 0.211644 oz
40 ct 0.282192 oz
50 ct 0.35274 oz
60 ct 0.423288 oz
70 ct 0.493835 oz
80 ct 0.564383 oz
90 ct 0.634931 oz
100 ct 0.705479 oz
200 ct 1.411 oz
300 ct 2.1164 oz
400 ct 2.8219 oz
500 ct 3.5274 oz
600 ct 4.2329 oz
700 ct 4.9384 oz
800 ct 5.6438 oz
900 ct 6.3493 oz
1,000 ct 7.0548 oz


  1. National Institute of Standards and Technology, Precious Metals Conversion Information,
  2. James Bucki, Troy Ounce vs. Ounce, The Spruce,

More Carat & Ounce Conversions