How much is 18K gold per gram in Thailand today?

THB 3,523.55 per gram of 18K at today's spot and exchange rate; see the timestamp under the table.

What tax applies to jewellery in Thailand?

7% VAT. The studio's price estimate adds it for you.

Which karat is common in Thailand?

18K is common in France, Italy, Switzerland, the UK's fine trade and most luxury houses; the estimate assumes the local norm when a piece has no hallmark and says so.

Is the gold price different in each country?

No. Gold has one world price in USD; the local figure is that price converted at today's exchange rate, plus local premiums and tax when you buy.

Thailand · 7% VAT on jewellery

18K gold price per gram in THB today

THB 3,523.55 per gram · THB 35,235.53 per 10 g · 1 USD = 33.285 THB

18K (750) is 75.0% gold. In Thailand jewellery carries 7% VAT, added to the shop price on top of the metal, the stones, the making and the margins.

Every karat in THB

Karat	Hallmark	Purity	THB per gram	per 10 g
9K	375	37.5%	THB 1,761.78	THB 17,617.77
10K	417	41.7%	THB 1,959.10	THB 19,590.96
14K	585	58.5%	THB 2,748.37	THB 27,483.72
18K	750	75.0%	THB 3,523.55	THB 35,235.53
21K	875	87.5%	THB 4,110.81	THB 41,108.12
22K	916	91.6%	THB 4,303.43	THB 43,034.33
24K	999	99.9%	THB 4,693.37	THB 46,933.73

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.

What typical 18K pieces are worth in THB

Typical piece	Weight	18K metal value
Thin wedding band (2 mm)	2.5 g	THB 8,808.88
Classic wedding band (4 mm)	4.8 g	THB 16,913.06
Solitaire ring	3.5 g	THB 12,332.44
Signet ring	10 g	THB 35,235.53
45 cm cable chain (1.5 mm)	3.5 g	THB 12,332.44
50 cm curb chain (4 mm)	14 g	THB 49,329.75
Solid bangle (5 mm)	30 g	THB 105,706.60
Pair of hoop earrings	3 g	THB 10,570.66

Metal value only, at spot: what the gold in the piece is worth today. Add stones, making and margins for a shop price; take about 85% for a scrap payout.

Frequently asked

How much is 18K gold per gram in Thailand today?: THB 3,523.55 per gram of 18K at today's spot and exchange rate; see the timestamp under the table.
What tax applies to jewellery in Thailand?: 7% VAT. The studio's price estimate adds it for you.
Which karat is common in Thailand?: 18K is common in France, Italy, Switzerland, the UK's fine trade and most luxury houses; the estimate assumes the local norm when a piece has no hallmark and says so.
Is the gold price different in each country?: No. Gold has one world price in USD; the local figure is that price converted at today's exchange rate, plus local premiums and tax when you buy.

18K in other currencies

9K in THB 10K in THB 14K in THB 21K in THB 22K in THB 24K in THB