18k Gold Price in Japan (JPY)
Enter a weight to value 18k gold by the troy ounce for buyers and sellers in Japan, priced from the live gold market. 18 carat (750) is 75.00% gold, and every figure below is priced at that fineness. Priced in Japanese Yen directly by the rates API — gold is quoting ¥638,227 per troy ounce.
Value of 1 ozt of 18k Gold
¥478,671
¥478,671 per troy ounce · ¥15,390 per gram
638,227.48 ÷ 31.1034768 × 0.75 × 31.1035 = ¥478,671
Prices on this page are delayed by up to 15 minutes. For real-time rates, use the CommodityPriceAPI.
Gold value by unit
One of each measure, at the current gold price.
| Measure | Detail | Value |
|---|---|---|
| Gram | 1 g | ¥15,390 |
| 10 grams | 10 g | ¥153,896 |
| Kilo | 1,000 g | ¥15,389,618 |
| Troy ounce | 31.1034768 g | ¥478,671 |
| Tola | 11.6638038 g | ¥179,501 |
| Pennyweight | 1.5551738 g | ¥23,934 |
| Baht (gold bar) | 15.244 g | ¥234,599 |
| Bhori | 11.6638038 g | ¥179,501 |
| Masha | 0.9719837 g | ¥14,958 |
| Ratti | 0.121498 g | ¥1,870 |
| Grain | 0.0647989 g | ¥997 |
| Sovereign (fine gold) | 7.32238 g | ¥112,689 |
| Tael (Hong Kong) | 37.7994 g | ¥581,718 |
| Tael (Taiwan) | 37.5 g | ¥577,111 |
| Tael / liang (mainland) | 50 g | ¥769,481 |
Gold value by purity
One troy ounce at each purity commonly sold.
| Measure | Detail | Value |
|---|---|---|
| 24 carat (999.9 fine) | 99.99% pure | ¥638,164 |
| 22 carat (916) | 91.67% pure | ¥585,042 |
| 21 carat (875) | 87.50% pure | ¥558,449 |
| 20 carat (833) | 83.33% pure | ¥531,856 |
| 18 carat (750) | 75.00% pure | ¥478,671 |
| 16 carat (667) | 66.67% pure | ¥425,485 |
| 14 carat (585) | 58.33% pure | ¥372,299 |
| 12 carat (500) | 50.00% pure | ¥319,114 |
| 10 carat (417) | 41.67% pure | ¥265,928 |
| 9 carat (375) | 37.50% pure | ¥239,335 |
| 8 carat (333) | 33.33% pure | ¥212,742 |
The same figure in other currencies
Every currency the rates API supports is available in the calculator above — pick it from the list and the figure is re-quoted in that currency without leaving this page.
How this is calculated
1 troy ounce = 31.1034768 g. This is the unit the spot market itself quotes, so no conversion is applied. Gold trades per troy ounce, so every figure here starts from that quote and is converted with the factor shown next to the result.
This is the spot-derived value, not the shop counter price in Japan. Local retail rates are set by the jewellers' association and usually sit above this figure once making charges and duty are added.
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Every unit — gram, ounce, tola, masha, tael, sovereign — is available in the calculator above without leaving the page.
Common questions
How much is 1 troy ounce of 18k gold worth today?
1 troy ounce is worth about ¥478,671, from a spot price of ¥638,227 per troy ounce.
How many grams are in 1 troy ounce?
1 troy ounce = 31.1034768 g. This is the unit the spot market itself quotes, so no conversion is applied.
What does 18k mean?
18 carat is 75% gold, stamped 750 — the usual European and American fine jewellery standard. At today's market that works out to ¥15,390 per gram.
Is this the same as the 18k gold rate quoted in Japan?
Not exactly. This converts the international spot price into Japanese Yen at the live exchange rate shown above. Local dealers add making charges, duty and their own margin, so the counter price in Japan is normally higher.
How often does this price update?
Every 15 minutes. The figure on this page is a cached quote and can be up to 15 minutes behind the market, and the timestamp above it always states when the price was actually taken. For real-time rates, request the same data from the CommodityPriceAPI directly.