Precious Metals & Bullion

How many troy ounces of fine gold are in 10 grams of 18K gold?

⚡ Instant Calculated Answer

10 grams of 18K gold contains exactly 7.5 grams (0.2411 troy ounces) of pure fine gold, with an intrinsic scrap melt value of approximately $650.97 USD at $2,700/oz t.

0.2411 oz t Primary Metric
7.5 g Fine Au Secondary Metric

📐 Mathematical Formula & Step-by-Step Substitution

\[ W_{fine} = W_{gross} \cdot \left(\frac{18}{24}\right) = 10 \cdot 0.7500 = 7.5 \text{ g} = 0.2411 \text{ oz t} \]
Fine_Weight = 10g * (18/24) = 7.5g = 0.2411 oz t
  1. Determine fineness ratio of 18K gold: 18 / 24 = 0.7500 (or 750.0‰ millesimal fineness).
  2. Multiply gross weight by fineness: 10 g × 0.7500 = 7.5 grams of fine elemental gold (Au).
  3. Convert grams to troy ounces (1 oz t = 31.1034768 g): 7.5 / 31.1034768 = 0.2411 troy ounces.
  4. Convert grams to tolas (1 tola = 11.6638 g): 7.5 / 11.6638 = 0.643 tolas.

📊 Nearby Parameter Reference Table

Gross Weight Fine Gold (g) Fine Gold (oz t) Melt Value ($2,700/oz)
5 g 3.75 g 0.1206 oz t $325.62
8 g 6.0 g 0.1929 oz t $520.83
10 g 7.5 g 0.2411 oz t $650.97
12 g 9.0 g 0.2894 oz t $781.38
15 g 11.25 g 0.3617 oz t $976.59
20 g 15.0 g 0.4823 oz t $1,302.21
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