Precious Metals & Bullion

How many troy ounces of fine gold are in 31.1035 grams of 18K gold?

⚡ Instant Calculated Answer

31.1035 grams of 18K gold contains exactly 23.328 grams (0.75 troy ounces) of pure fine gold, with an intrinsic scrap melt value of approximately $2,025.00 USD at $2,700/oz t.

0.75 oz t Primary Metric
23.328 g Fine Au Secondary Metric

📐 Mathematical Formula & Step-by-Step Substitution

\[ W_{fine} = W_{gross} \cdot \left(\frac{18}{24}\right) = 31.1035 \cdot 0.7500 = 23.328 \text{ g} = 0.75 \text{ oz t} \]
Fine_Weight = 31.1035g * (18/24) = 23.328g = 0.75 oz t
  1. Determine fineness ratio of 18K gold: 18 / 24 = 0.7500 (or 750.0‰ millesimal fineness).
  2. Multiply gross weight by fineness: 31.1035 g × 0.7500 = 23.328 grams of fine elemental gold (Au).
  3. Convert grams to troy ounces (1 oz t = 31.1034768 g): 23.328 / 31.1034768 = 0.75 troy ounces.
  4. Convert grams to tolas (1 tola = 11.6638 g): 23.328 / 11.6638 = 2.0 tolas.

📊 Nearby Parameter Reference Table

Gross Weight Fine Gold (g) Fine Gold (oz t) Melt Value ($2,700/oz)
15.55 g 11.663 g 0.375 oz t $1,012.50
24.88 g 18.66 g 0.5999 oz t $1,619.73
31.1 g 23.325 g 0.7499 oz t $2,024.73
37.32 g 27.99 g 0.8999 oz t $2,429.73
46.66 g 34.995 g 1.1251 oz t $3,037.77
62.21 g 46.657 g 1.5001 oz t $4,050.27
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