Precious Metals & Bullion

How many troy ounces of fine gold are in 25 grams of 18K gold?

⚡ Instant Calculated Answer

25 grams of 18K gold contains exactly 18.75 grams (0.6028 troy ounces) of pure fine gold, with an intrinsic scrap melt value of approximately $1,627.56 USD at $2,700/oz t.

0.6028 oz t Primary Metric
18.75 g Fine Au Secondary Metric

📐 Mathematical Formula & Step-by-Step Substitution

\[ W_{fine} = W_{gross} \cdot \left(\frac{18}{24}\right) = 25 \cdot 0.7500 = 18.75 \text{ g} = 0.6028 \text{ oz t} \]
Fine_Weight = 25g * (18/24) = 18.75g = 0.6028 oz t
  1. Determine fineness ratio of 18K gold: 18 / 24 = 0.7500 (or 750.0‰ millesimal fineness).
  2. Multiply gross weight by fineness: 25 g × 0.7500 = 18.75 grams of fine elemental gold (Au).
  3. Convert grams to troy ounces (1 oz t = 31.1034768 g): 18.75 / 31.1034768 = 0.6028 troy ounces.
  4. Convert grams to tolas (1 tola = 11.6638 g): 18.75 / 11.6638 = 1.6075 tolas.

📊 Nearby Parameter Reference Table

Gross Weight Fine Gold (g) Fine Gold (oz t) Melt Value ($2,700/oz)
12.5 g 9.375 g 0.3014 oz t $813.78
20 g 15.0 g 0.4823 oz t $1,302.21
25 g 18.75 g 0.6028 oz t $1,627.56
30 g 22.5 g 0.7234 oz t $1,953.18
37.5 g 28.125 g 0.9042 oz t $2,441.34
50 g 37.5 g 1.2057 oz t $3,255.39
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