18K Gold Price Per Gram Today
The live 18K gold price per gram is shown below, refreshing every 60 seconds from authenticated spot market data. 18 karat gold is 75% pure gold — the most popular purity for fine jewellery in Europe and widely used in high-end jewellery worldwide.
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18K Gold Price Table — All Karats Compared
Live 18K gold price per gram alongside all major karat benchmarks. 18K is highlighted.
| Karat | Purity | Per Gram (USD) | Per Gram (GBP) | Per Troy Oz (USD) |
|---|---|---|---|---|
| 24K | 99.99% | — | — | — |
| 22K | 91.67% | — | — | — |
| 18K ← You are here | 75.00% | — | — | — |
| 14K | 58.33% | — | — | — |
| 10K | 41.67% | — | — | — |
| 9K | 37.50% | — | — | — |
18K Gold Calculator
Enter the weight of your 18K gold item to calculate its current melt value at today's live spot price.
What Is 18K Gold?
18 karat gold (also written 18ct, 18kt, or 750 gold) contains 75% pure gold — 18 parts gold out of 24 total parts. The hallmark "750" found on European 18K pieces denotes 750 parts per thousand (75%) pure gold.
18K is the most popular gold purity for fine jewellery in Europe and is widely used in high-end jewellery worldwide, preferred by luxury brands such as Cartier, Bulgari, and Tiffany.
Why Choose 18K Gold?
- Rich colour: The higher gold content (75%) gives 18K a deeper, warmer yellow colour than 14K or 10K.
- Hypoallergenic: 18K white and rose gold are among the most skin-friendly jewellery options.
- Prestige and value: 18K is the minimum purity used by most luxury jewellery houses.
How to Calculate 18K Gold Value Per Gram
Formula: (Gold spot price per troy oz ÷ 31.1035) × 0.75
Example at $3,300/oz: $3,300 ÷ 31.1035 = $106.10/g × 0.75 = $79.58 per gram of 18K gold