Convert ounces to pennyweights for jewelry making, precious metal trading, and gemstone valuation. Accurate calculator with industry-standard conversion factors.
1 ounce equals 18.229148948233824 pennyweight
Formula: dwt = oz × 18.2292
The ounce and pennyweight are both traditional weight units with distinct applications in precious metals and jewelry industries. One ounce equals exactly 20 pennyweights, making this a critical conversion for jewelers, precious metal dealers, and gemstone professionals. Understanding this relationship is essential for accurate pricing, inventory management, and international metal trading.
Precision in ounce-to-pennyweight conversion directly impacts profitability in precious metals trading. A single calculation error can result in significant financial losses when dealing with gold, silver, or platinum. The jewelry industry relies on pennyweights for fine measurements, while international markets often quote in ounces. Accurate conversion ensures proper pricing, fair customer transactions, and compliance with industry standards.
Precious metal dealers and refineries work with both ounces and pennyweights depending on market context and customer requirements. International commodity markets price metals in troy ounces, while jewelry craftspeople traditionally measure in pennyweights. Accurate conversion between these units is essential for inventory tracking, pricing calculations, and settlement of metal transactions across different markets.
Jewelers use pennyweights as the primary unit for measuring precious metals in their designs and fabrication processes. However, when sourcing materials from international suppliers or selling to wholesale buyers, they encounter pricing in troy ounces. Converting between these units allows jewelers to accurately calculate material costs, determine pricing margins, and ensure consistent measurements across design specifications and production runs.
| ounces | pennyweights |
|---|---|
| 1 oz | 18.229149 dwt |
| 5 oz | 91.145745 dwt |
| 10 oz | 182.291489 dwt |
| 50 oz | 911.457447 dwt |
| 100 oz | 1822.914895 dwt |
Formula: dwt = oz × conversion factor
The ounce is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
The pennyweight is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
This ounce to pennyweight 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.
Exactly 20 pennyweights equal 1 troy ounce. This is a defined relationship in the avoirdupois system. However, if you're working with regular avoirdupois ounces (used for food and general weight), the conversion is different: 1 avoirdupois ounce = 14.583 pennyweights. Always verify which ounce type you're using, as precious metals exclusively use troy ounces. For jewelry and metals, remember the simple rule: multiply troy ounces by 20 to get pennyweights.
Pennyweights have been used in jewelry for centuries and remain deeply embedded in industry practice, pricing structures, and professional standards. Many experienced jewelers think naturally in pennyweights for design and costing. Additionally, historical gemstone and precious metal pricing references use pennyweights, making it necessary for professionals to maintain fluency in both systems. Grams are increasingly used for modern documentation and international transactions, but pennyweights remain the traditional standard in many jewelry workshops.
Browse our collection of 6 Weight converters. Each converter provides instant, accurate results for professional and academic use.