How is the price per gram for a karat calculated?

Pure gold price per gram (spot per troy ounce ÷ 31.1035) × the karat's purity: 18K is 75%, 14K 58.5%, 9K 37.5%.

Is this what a jeweller pays or sells at?

Neither exactly. It is the metal value at spot; makers pay a few percent over it for casting alloy, and refiners pay about 85% of it for scrap.

How often does it update?

Daily, with the timestamp shown under each table.

Why do prices differ between currencies?

Only by the exchange rate, which is also refreshed daily; gold itself has one world price.

Gold price per gram today, by karat

One world price for gold, converted to what a gram of 9K to 24K is worth right now in 25 currencies. Multiply by a piece's weight and you have its metal value; the studio does this automatically for any modelled or weighed piece.

Karat	Hallmark	Purity	USD per gram	per 10 g
9K	375	37.5%	$52.93	$529.29
10K	417	41.7%	$58.86	$588.57
14K	585	58.5%	$82.57	$825.70
18K	750	75.0%	$105.86	$1,058.59
21K	875	87.5%	$123.50	$1,235.02
22K	916	91.6%	$129.29	$1,292.89
24K	999	99.9%	$141.00	$1,410.04

Spot $4,390.10 per troy ounce ($141.15 per gram of pure gold) from gold-api.com, Fri, 18 Sep 2026 06:15:08 UTC; exchange rates from open.er-api.com. Refreshed daily. Per-gram figures are pure gold price × karat purity; dealers buy and sell a few percent either side.

By karat

9K gold price per gram

Hallmark 375 · 37.5% gold · common in the UK, Ireland, Australia and New Zealand

10K gold price per gram

Hallmark 417 · 41.7% gold · common in the United States and Canada

14K gold price per gram

Hallmark 585 · 58.5% gold · common in the United States, Germany, Scandinavia and Eastern Europe

18K gold price per gram

Hallmark 750 · 75.0% gold · common in France, Italy, Switzerland, the UK's fine trade and most luxury houses

21K gold price per gram

Hallmark 875 · 87.5% gold · common in the Gulf states and parts of the Middle East

22K gold price per gram

Hallmark 916 · 91.6% gold · common in India, Pakistan, the Gulf and Southeast Asia

24K gold price per gram

Hallmark 999 · 99.9% gold · common in China, Hong Kong and bullion markets

Frequently asked

How is the price per gram for a karat calculated?: Pure gold price per gram (spot per troy ounce ÷ 31.1035) × the karat's purity: 18K is 75%, 14K 58.5%, 9K 37.5%.
Is this what a jeweller pays or sells at?: Neither exactly. It is the metal value at spot; makers pay a few percent over it for casting alloy, and refiners pay about 85% of it for scrap.
How often does it update?: Daily, with the timestamp shown under each table.
Why do prices differ between currencies?: Only by the exchange rate, which is also refreshed daily; gold itself has one world price.

Gold price per gram today, by karat

By karat

By currency

Frequently asked