Carat to Ounce Converter
Weight · unit-converter
Convert Carat to Ounce with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Carat (ct)
To: Ounce (oz)
About Carat
The metric carat is exactly 0.2 grams (200 mg), commonly used for gemstones and jewelry.
About Ounce
The avoirdupois ounce is 1/16 of an avoirdupois pound (about 28.35 g). Cooking and postal weights often use ounces.
How to convert carats to ounces
1 carat is equal to 0.00705479238992 ounce:
1 ct = (0.2 g ÷ 28.349523125 g) oz = 0.00705479238992 oz
Each carat is defined as 0.2 g and each ounce as 28.349523125 g, so one ct equals 0.2 ÷ 28.349523125 oz = 0.00705479238992 oz.
Let w(ct) be the numeric value of the same mass measured in Carat (ct), and w(oz) the value in Ounce (oz). Then:
w(oz) = w(ct) × (0.2 / 28.349523125)
Equivalently, divide by how many ct fit into one oz (grams per oz divided by grams per ct):
w(oz) = w(ct) ÷ 141.74761562500001
Or: ounce = carat ÷ 141.74761562500001
Examples
Example #1: Convert 20 ct to ounce
20 ct = 20 ct × (0.2/28.349523125) oz = 0.1410958478 oz
20 ct = 20 ct ÷ 141.74761562500001 = 0.1410958478 oz
Example #2: Convert 50 ct to ounce
50 ct = 50 ct × (0.2/28.349523125) oz = 0.3527396195 oz
50 ct = 50 ct ÷ 141.74761562500001 = 0.3527396195 oz
Summary
To convert Carat to Ounce, multiply the value in ct by the ratio of grams per ct divided by grams per oz. Equivalently: value_oz = value_ct × (0.2 / 28.349523125). Numerically, 1 ct equals 0.007054792389916083 oz.
Relationship context
You are converting between metric (SI) (Carats) and imperial / UK (stone, long ton, pound, ounce) (Ounces). Metric mass is decimal from the gram; US and imperial masses use pounds and ounces with fixed definitions relative to the kilogram. The numeric factor used here is 7.054792e-3.
Conversion tables
| Carat (ct) | Ounce (oz) |
|---|---|
| 0.1 | 0.0007054792 |
| 1 | 0.0070547924 |
| 2 | 0.0141095848 |
| 3 | 0.0211643772 |
| 4 | 0.0282191696 |
| 5 | 0.0352739619 |
| 6 | 0.0423287543 |
| 7 | 0.0493835467 |
| 8 | 0.0564383391 |
| 9 | 0.0634931315 |
| Carat (ct) | Ounce (oz) |
|---|---|
| 10 | 0.0705479239 |
| 20 | 0.1410958478 |
| 30 | 0.2116437717 |
| 40 | 0.2821916956 |
| 50 | 0.3527396195 |
| 60 | 0.4232875434 |
| 70 | 0.4938354673 |
| 80 | 0.5643833912 |
| 90 | 0.6349313151 |
| 100 | 0.705479239 |