Gold Price Per Troy Ounce — By Karat Today
| Karat | Price per troy oz (USD) |
|---|---|
| 24K | — |
| 22K | — |
| 18K | — |
| 14K | — |
| 10K | — |
Why Gold Is Priced Per Troy Ounce, Not a Standard Ounce
A troy ounce (31.1035g) is heavier than the everyday avoirdupois ounce (28.35g) used for food or postage — bullion, coins and the interbank spot price are always quoted in troy ounces, a convention dating back to medieval bullion trading. If you're pricing a bar or an American Gold Eagle/Buffalo coin rather than jewelry, this is the unit dealers and price charts will quote.
Other Units & Related Pages
24K Gold
Stamped 24K
22K Gold
Stamped 22K
18K Gold
Stamped 18K
14K Gold
Stamped 14K
10K Gold
Stamped 10K
Price History
Chart & trend
Cash for Gold
Selling & buyer estimate
Methodology
Data source & formula
Frequently Asked Questions
A troy ounce is 31.1035 grams — heavier than the 28.35g "standard" (avoirdupois) ounce used for everyday weights. All gold bullion and spot prices use the troy ounce.
For 24K (999.9 fine) gold, yes — the troy ounce price is the raw spot price. For lower karats (22K, 18K, 14K, 10K), the per-ounce price is the spot price scaled down by that karat's fine-gold fraction.
Bullion (bars, coins) is bought and sold in large enough units that the troy ounce is a practical, industry-standard size. Jewelry pieces are usually a few grams, so pricing per gram is more useful for valuing a ring, chain or bracelet.