18K gold price in Japan today
On November 5, 2026, 18K gold in Japan costs 15,668.88 JPY per gram and 487,357 JPY per troy ounce, based on the live international spot price.
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18K gold price in JPY by weight
| Weight | Spot value | Buy (bid) | Sell (ask) |
|---|---|---|---|
| 1 g | 15,668.88 | 15,355.50 | 15,982.25 |
| 5 g | 78,344.38 | 76,777.49 | 79,911.27 |
| 8 g | 125,351 | 122,844 | 127,858 |
| 10 g | 156,689 | 153,555 | 159,823 |
| Troy ounce | 487,357 | 477,609 | 497,104 |
| Tola | 182,759 | 179,104 | 186,414 |
| Kilogram | 15,668,876 | 15,355,498 | 15,982,254 |
What is 18K gold?
18K gold is 75% pure (hallmark 750). It is the usual fine-jewelry standard in Europe and Latin America and the base for most white and rose gold.
The 18K price is calculated as the 24K price multiplied by 0.75. Today that gives 20,891.83 × 0.75 = 15,668.88 JPY per gram.
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JPY exchange rate
| 1 USD | 158.3779 JPY |
|---|---|
| 1 EUR | 177.9703 JPY |
| 1 GBP | 213.3564 JPY |
Gold spot price trend (USD/oz)
How the gold price in Japan is calculated
We take the live spot price of 4,102.90 USD per troy ounce, divide it by 31.1035 to get 131.91 USD per gram of pure gold, and multiply by today’s exchange rate of 158.3779 JPY per dollar. That gives 20,891.83 JPY per gram for 24K. Lower karats are priced by their gold content.
Japanese retailers such as Tanaka publish daily retail gold prices in yen per gram that include consumption tax.
Before you sell, weigh your pieces on a jeweler’s scale, check the hallmark and compare at least two quotes. Read our guide to selling gold.
More gold prices in Japan
24K gold22K gold21K gold18K gold14K gold10K gold9K gold Per gramPer troy ouncePer tolaPer kilogram
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