Gold today (21 Oct 2026): 651,272 JPY per troy ounce, which is 20,939 JPY per gram of pure gold. This is the international spot reference in Japanese yen, not a shop price.
Price by karat
Karat
1 gram
10 grams
1 ounce
24K 99.9% pure
20,918 JPY
209,180 JPY
650,621 JPY
22K 91.7%
19,194 JPY
191,940 JPY
597,000 JPY
21K 87.5%
18,322 JPY
183,215 JPY
569,863 JPY
18K 75%
15,704 JPY
157,042 JPY
488,454 JPY
1 troy ounce = 31.1035 g · 1 kg of pure gold = 20,938,890 JPY
20,939 JPY per gram for pure (24K) gold; 22K is about 19,194 JPY and 18K about 15,704 JPY (spot reference, 2026-10-21).
How has the gold price changed in the past year?
Down 1.7% — from 21,099 JPY to 20,749 JPY per gram between 21 Oct 2025 and 22 Oct 2026. The high was 27,262 JPY on 29 Jan 2026.
What is a troy ounce?
The unit used for precious metals: 1 troy ounce = 31.1035 grams, a little heavier than an ordinary ounce (28.35 g).
Source: Open exchange-rate data by fawazahmed0/exchange-api (CC0), compiled daily from public sources; the gold price is the international spot reference per troy ounce, converted at the day’s reference exchange rate. Purity prices are simple proportions of the pure-metal price. Shop prices include making charges, dealer margins and taxes. Reference only — not an offer to buy or sell.