Convert troy ounces to grams for gold, silver, and precious metals trading. Accurate calculator with conversion factor 31.1035 g/troy oz for jewelry, bullion, and investment purposes.
1 troy ounce equals 31.103521851779277 gram
Formula: g = oz t × 31.1035
The troy ounce (31.1035 grams) is the standard unit for measuring precious metals worldwide, while the gram is the metric equivalent. Understanding this conversion is essential for jewelry professionals, bullion dealers, investors, and gemologists who work across different measurement systems. A single troy ounce difference in gold pricing can represent thousands of dollars in value.
Precious metals trading depends on precise measurements—even small conversion errors directly impact transaction values. A miscalculation of just 0.1 troy ounce in gold (worth approximately $200 at typical market rates) can result in significant financial losses. International bullion markets, jewelry manufacturing, and investment portfolios all require accurate troy ounce to gram conversions for legal compliance and fair pricing.
Bullion dealers, precious metals brokers, and investment firms use troy ounce to gram conversions daily when buying, selling, and pricing gold, silver, platinum, and palladium. International markets quote prices in troy ounces per unit, but physical inventory and delivery specifications often require gram measurements. Accurate conversion ensures fair pricing and regulatory compliance across global markets.
Jewelry artisans, manufacturers, and retail jewelers work with troy ounces for gold and precious metal specifications while using grams for detailed design work and gemstone settings. Conversion accuracy affects material costs, profit margins, and customer pricing. European and Asian jewelry markets frequently use grams, while specifications from suppliers may be in troy ounces.
| troy ounces | grams |
|---|---|
| 1 oz t | 31.103522 g |
| 5 oz t | 155.517609 g |
| 10 oz t | 311.035219 g |
| 50 oz t | 1555.176093 g |
| 100 oz t | 3110.352185 g |
Formula: g = oz t × conversion factor
The troy ounce is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
The gram is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
This troy ounce to gram 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 troy ounce equals precisely 31.1035 grams. This conversion factor is internationally standardized and used in all precious metals trading, jewelry manufacturing, and bullion markets. The exactness comes from the troy ounce being defined as 480 grains, with one grain equaling 64.79891 milligrams, which mathematically produces 31.1035 grams. For financial transactions, always use all decimal places; rounding to 31 grams introduces unacceptable error in high-value trades.
Historical tradition and standardization created the troy ounce system for precious metals. Medieval European trade established troy ounces as the standard for gold and silver, and this convention persisted through centuries of commerce. When the metric system introduced grams, precious metals markets had already established troy ounce pricing globally—changing would have disrupted centuries of price history and contract standards. Today, all international precious metals spot prices are quoted in troy ounces per unit, making it the practical standard despite the metric system's advantages.
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