SpotGold Melt Value Calculator
Convert gross alloy weight to fine gold and calculate its theoretical value at the available spot quote.
Gold · $3,887.60 USD/ozt · $124.99 USD/gMarket quote · Gold API · 2026-11-14 14:09 UTC
Your item
100% Melt Value
10 g fine gold
- Estimated buyer payout · 80%
- $999.91
- Illustrative payout range · 70–100%
- $874.92 – $1,249.89
24K gold price by weight
| Weight | Melt value (USD) |
|---|---|
| 1 g | $124.99 |
| 5 g | $624.95 |
| 10 g | $1,249.89 |
| 20 g | $2,499.78 |
| 30 g | $3,749.68 |
| 40 g | $4,999.57 |
| 50 g | $6,249.46 |
| 100 g | $12,498.92 |
How to calculate melt value
Melt value = weight in grams × purity fraction × (USD spot price per ozt ÷ 31.1034768)
At 24K purity, 10 g contains 10.0000 g of fine gold. Use 31.1034768 g per troy ounce or 1.55517384 g per pennyweight.
Estimated payout = melt value × selected payout percentage.
Gold Hallmark & Stamp Guide
| Stamp | Karat | Gold content |
|---|---|---|
| 999 | 24K | 99.9% |
| 916 | 22K | 91.6% |
| 875 | 21K | 87.5% |
| 750 | 18K | 75.0% |
| 585 | 14K | 58.5% |
| 417 | 10K | 41.7% |
| 375 | 9K / 9ct | 37.5% |
Frequently asked questions
What is melt value?
It is the theoretical market value of the precious metal contained in the item, before any fees or refining deductions.
Can a piece sell for more than melt value?
Yes. A collectible coin, signed jewel or desirable vintage piece may command a premium for factors such as rarity and condition.
How much fine gold is in 20 grams of 18K?
18K is 75% gold by weight, so a 20-gram piece contains 15 grams of fine gold.
Why does a dealer offer less than melt value?
A buyer may deduct refining, testing, shipping or operating costs. Ask for a written net offer with the tested purity and payable weight.
How many grams are in a troy ounce?
One troy ounce equals 31.1034768 grams. One pennyweight equals one twentieth of a troy ounce.
What do stamps like 14K GP, GF, HGE, or GEP mean for melt value?
These marks describe a gold layer, so do not use the standard 14K setting for the whole item. GP (Gold Plated), HGE (Heavy Gold Electroplate), and GEP (Gold Electroplated) indicate a coating that usually has negligible recoverable value on an individual piece. GF (Gold Filled) and RGP (Rolled Gold Plate) indicate a thicker, mechanically bonded layer. A 1/20 14K GF mark means the 14K alloy layer accounts for one twentieth (5%) of the metal weight. RGP can have a different fraction. Refiners may require bulk lots because of processing costs.