Ounces to Carats (oz to ct) Converter

How to convert ounces to carats

Formulact = oz × 141.7476156

Multiply the value in ounces by 141.7476156. To go the other way, multiply by 0.00705479239 (or divide by 141.7476156).

An ounce is larger than a carat: one ounce contains 141.7476156 carats.

Worked examples

1 ounce1 oz × 141.7476156 = 141.7476156 ct
5 ounces5 oz × 141.7476156 = 708.7380781 ct
10 ounces10 oz × 141.7476156 = 1,417.476156 ct
20 ounces20 oz × 141.7476156 = 2,834.952313 ct
100 ounces100 oz × 141.7476156 = 14,174.76156 ct

Ounces to carats conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Ounces to carats: 0.1–10 oz
Ounces (oz)	Carats (ct)
0.1 oz	14.174762 ct
0.25 oz	35.436904 ct
0.5 oz	70.873808 ct
1 oz	141.74762 ct
2 oz	283.49523 ct
3 oz	425.24285 ct
4 oz	566.99046 ct
5 oz	708.73808 ct
6 oz	850.48569 ct
7 oz	992.23331 ct
8 oz	1,133.9809 ct
9 oz	1,275.7285 ct
10 oz	1,417.4762 ct

Ounces to carats: 12–1,000 oz
Ounces (oz)	Carats (ct)
12 oz	1,700.9714 ct
15 oz	2,126.2142 ct
20 oz	2,834.9523 ct
25 oz	3,543.6904 ct
30 oz	4,252.4285 ct
40 oz	5,669.9046 ct
50 oz	7,087.3808 ct
75 oz	10,631.071 ct
100 oz	14,174.762 ct
250 oz	35,436.904 ct
500 oz	70,873.808 ct
1,000 oz	141,747.62 ct

About the units

Ounce (oz)

One sixteenth of a pound: exactly 28.349523125 g. Not to be confused with the fluid ounce (volume) or the troy ounce used for precious metals. One ounce equals 0.02834952313 kilograms (kg).

Carat (ct)

The metric carat is exactly 200 mg and is used to weigh gemstones. (Karat, a gold-purity scale, is a different thing.) One carat equals 0.0002 kilograms (kg).

Frequently asked questions

How many carats are in one ounce?

There are 141.7476156 carats in one ounce, and this value is exact by definition.

How do I convert ounces to carats?

Multiply the number of ounces by 141.7476156. For example, 10 oz × 141.7476156 = 1,417.476156 ct.

How many ounces are in one carat?

One carat equals 0.00705479239 ounces. That is the reverse factor, 1 ÷ 141.7476156.

What is 10 ounces in carats?

10 oz = 1,417.476156 ct.

Is this oz to ct converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.

Ounces to Carats Converter