Gold Melt Value Calculator
Calculate the melt value of gold jewelry and bullion based on weight, purity, and current market price. This calculator helps buyers and sellers determine the intrinsic value of gold items before refining, accounting for different karats and weight measurements.
Formula
Melt Value = Weight (troy oz) × Spot Price (per troy oz) × Purity Factor × (1 - Refining Fee %)
- 1 troy oz = 31.1035 grams
- Purity measured in decimals: 24k=0.999 (99.9% pure), 22k=0.916, 18k=0.750, 14k=0.583, 9k=0.375
- Typical refining fees: 15-25% depending on refiner
- Net value = what you actually receive after smelting, assaying, and refining
14K Gold Jewelry
Inputs
- Weight (troy oz): 10 oz
- Spot Price per Troy Oz ($): 1950 $
- Purity (24k=0.999, 22k=0.916, 18k=0.750, 14k=0.583, 9k=0.375): 0.583 decimal
10 troy oz of 14K gold (58.3% pure) at $1,950/oz spot price = $11,367 gross melt value. After 20% refining fee = $9,094 net received.
Frequently asked questions
What karat purity values should I use?
24k=0.999 (pure), 22k=0.916, 20k=0.833, 18k=0.750, 14k=0.583, 10k=0.417, 9k=0.375. Check jewelry hallmarks for exact karat.
How do I convert grams to troy ounces?
Divide grams by 31.1035. Example: 31.1g ÷ 31.1035 ≈ 1 troy oz.
Why is there a refining fee?
Refiners charge for smelting, assaying purity, recovering other metals, and handling costs. Fees vary 15-25% by refiner.