Ounce to Carat Converter
Weight · unit-converter
Convert Ounce to Carat 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: Ounce (oz)
To: Carat (ct)
About Ounce
The avoirdupois ounce is 1/16 of an avoirdupois pound (about 28.35 g). Cooking and postal weights often use ounces.
About Carat
The metric carat is exactly 0.2 grams (200 mg), commonly used for gemstones and jewelry.
How to convert ounces to carats
1 ounce is equal to 141.74761562500001 carat:
1 oz = (28.349523125 g ÷ 0.2 g) ct = 141.74761562500001 ct
Each ounce is defined as 28.349523125 g and each carat as 0.2 g, so one oz equals 28.349523125 ÷ 0.2 ct = 141.74761562500001 ct.
Let w(oz) be the numeric value of the same mass measured in Ounce (oz), and w(ct) the value in Carat (ct). Then:
w(ct) = w(oz) × (28.349523125 / 0.2)
Equivalently, divide by how many oz fit into one ct (grams per ct divided by grams per oz):
w(ct) = w(oz) ÷ 0.00705479238992
Or: carat = ounce ÷ 0.00705479238992
Examples
Example #1: Convert 20 oz to carat
20 oz = 20 oz × (28.349523125/0.2) ct = 2834.9523125 ct
20 oz = 20 oz ÷ 0.00705479238992 = 2834.9523125 ct
Example #2: Convert 50 oz to carat
50 oz = 50 oz × (28.349523125/0.2) ct = 7087.38078125 ct
50 oz = 50 oz ÷ 0.00705479238992 = 7087.38078125 ct
Summary
To convert Ounce to Carat, multiply the value in oz by the ratio of grams per oz divided by grams per ct. Equivalently: value_ct = value_oz × (28.349523125 / 0.2). Numerically, 1 oz equals 141.747615625 ct.
Relationship context
You are converting between imperial / UK (stone, long ton, pound, ounce) (Ounces) and metric (SI) (Carats). 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 1.417476e+2.
Conversion tables
| Ounce (oz) | Carat (ct) |
|---|---|
| 0.1 | 14.1747615625 |
| 1 | 141.747615625 |
| 2 | 283.49523125 |
| 3 | 425.242846875 |
| 4 | 566.9904625 |
| 5 | 708.738078125 |
| 6 | 850.48569375 |
| 7 | 992.233309375 |
| 8 | 1,133.980925 |
| 9 | 1,275.72854063 |
| Ounce (oz) | Carat (ct) |
|---|---|
| 10 | 1,417.47615625 |
| 20 | 2,834.9523125 |
| 30 | 4,252.42846875 |
| 40 | 5,669.904625 |
| 50 | 7,087.38078125 |
| 60 | 8,504.8569375 |
| 70 | 9,922.33309375 |
| 80 | 11,339.80925 |
| 90 | 12,757.2854063 |
| 100 | 14,174.7615625 |