Ounce to Carat Converter
Convert Ounce (oz) to Carat (ct) instantly. 1 oz = 141.747616 ct.
Mass Converter
26 units available
1 oz = 141.747616 ct
Formula:
ct = oz × 141.747615625With your value: 1 oz = 141.74761563 ct
How big is that?
Everyday references on a logarithmic scale, all expressed in ounce so you can sanity-check the result.
Other Ounce to Carat conversions
Ounce to Carat Conversion Table
| Ounce (oz) | Carat (ct) |
|---|---|
| 0.5 | 70.873808 |
| 1 | 141.747616 |
| 2 | 283.495231 |
| 5 | 708.738078 |
| 10 | 1,417.476156 |
| 15 | 2,126.214234 |
| 20 | 2,834.952313 |
| 25 | 3,543.690391 |
| 50 | 7,087.380781 |
| 100 | 14,174.761563 |
| 250 | 35,436.903906 |
| 500 | 70,873.807813 |
| 1000 | 141,747.615625 |
Carat to Ounce Conversion Table
| Carat (ct) | Ounce (oz) |
|---|---|
| 0.5 | 0.003527 |
| 1 | 0.007055 |
| 2 | 0.01411 |
| 5 | 0.035274 |
| 10 | 0.070548 |
| 15 | 0.105822 |
| 20 | 0.141096 |
| 25 | 0.17637 |
| 50 | 0.35274 |
| 100 | 0.705479 |
| 250 | 1.763698 |
| 500 | 3.527396 |
| 1000 | 7.054792 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Ounce (oz)
Mass
1 avoirdupois ounce = 1/16 lb = 0.028 349 523 125 kg exactly.
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Carat (ct)
Mass
The metric carat is exactly 200 mg, agreed internationally in 1907.
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Ounce to Carat
To convert from Ounce (oz) to Carat (ct), multiply the value by 141.747615625.
Formula: ct = oz × 141.747615625
Reverse: oz = ct × 0.0070547924
Step-by-Step Example
- Start with your value in Ounce. For example: 5 oz
- Multiply by the conversion factor: 5 x 141.747615625
- The result is: 708.738078 ct
About Ounce
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
Common uses: food portions, postal mail, precious metals.
About Carat
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
Fun Fact: The word "carat" comes from the carob seed, which was used as a balance weight in ancient gem trading.
Common uses: gemstones, diamonds, jewelry.
Frequently Asked Questions
How many Carat are in 1 Ounce?
There are exactly 141.747615625 Carat in 1 Ounce. This means the conversion factor from Ounce to Carat is 141.747615625.
What is the formula to convert Ounce to Carat?
The formula to convert Ounce to Carat is: ct = oz × 141.747615625. For example, to convert 10 Ounce to Carat, you would multiply 10 by 141.747615625.
What is a Ounce?
The ounce (oz) equals 1/16 of a pound or approximately 28.35 grams. It is used for food portions and small weight measurements.
What is a Carat?
The carat equals 200 milligrams and is the standard unit for measuring gemstone weight.
What are the common uses of Ounce?
The Ounce is commonly used in food portions, postal mail, precious metals.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Ounce to Carat converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/ounce-to-carat