Convert carats to ounces for diamond grading, jewelry design, and precious metal trading. Accurate calculator with conversion factors and professional examples.
1 carat equals 0.0070548 ounce
Formula: oz = ct × 0.00705480
The carat, used primarily for gemstones and precious metals, differs fundamentally from the avoirdupois ounce used in general commerce. One carat equals approximately 0.064301 ounces (troy), or 0.003527 ounces (avoirdupois). Understanding this conversion is essential for jewelers, gemologists, and anyone trading in diamonds, gold, or other precious materials across different measurement systems.
Precision in carat-to-ounce conversion directly impacts the valuation of diamonds, gemstones, and precious metals. A single carat difference in a diamond can mean thousands of dollars in price variation. Jewelers and gemologists must convert between carats and ounces when working with international suppliers, calculating precious metal content, or documenting inventory. Incorrect conversions lead to significant financial losses and damaged professional credibility.
Jewelers and diamond traders use carat-to-ounce conversions when sourcing gemstones internationally, calculating precious metal weights, and preparing inventory documentation. Diamond prices are quoted in carats per unit, while metal settings may be weighed in troy ounces. Accurate conversion ensures proper pricing, fair customer transactions, and compliance with industry standards.
Professional gemologists and precious metal refiners must convert carat measurements to ounces when processing materials, calculating purity percentages, and determining final product weights. Refineries receive materials in various units and must standardize measurements for accurate yield calculations and customer invoicing. This conversion is critical for maintaining quality control and transparent business practices.
| carats | ounces |
|---|---|
| 10 ct | 0.070548 oz |
| 50 ct | 0.35274 oz |
| 100 ct | 0.70548 oz |
| 500 ct | 3.5274 oz |
| 1000 ct | 7.0548 oz |
Formula: oz = ct × conversion factor
The carat is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
The ounce is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
This carat to ounce converter uses high-precision conversion factors to ensure accurate results for professional and academic use.
Our calculator provides results with up to 10 decimal places for maximum accuracy.
One carat equals 0.064301 troy ounces (the standard for precious metals and gemstones). This equals exactly 200 milligrams or 0.2 grams in metric. If using avoirdupois ounces (general weight), one carat equals 0.003527 ounces, but this unit is never used in jewelry or gemstone work. Always use troy ounces when converting carats for precious materials—confusion between these two ounce types is the most common conversion error in the jewelry industry.
Carats provide superior precision for gemstones because they represent 200 milligrams, allowing jewelers to distinguish small weight differences that significantly affect price. A 1-carat diamond is dramatically more valuable than a 0.9-carat diamond, often by 10-20%. Ounces (troy or avoirdupois) are too coarse for this level of precision—one troy ounce equals 155.517 carats, making individual carat variations invisible at the ounce scale. Carats became the international standard specifically because gemstones require this precision.
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