All articlesGold Education
Gold Karat Value Chart: What Each Purity Is Actually Worth
2026-08-27 5 min readGold Buyer Sri Lanka Team
Every karat is simply a percentage of pure gold. Memorise the percentages and you can estimate any offer yourself.
The conversion factors
- 24K — 99.9% pure — factor 0.999
- 22K — 91.6% pure — factor 0.916
- 21K — 87.5% pure — factor 0.875
- 18K — 75.0% pure — factor 0.750
- 14K — 58.5% pure — factor 0.585
- 9K — 37.5% pure — factor 0.375
How to use them
Take the pure gold rate per gram, multiply by the factor for your karat, then multiply by your weight in grams. That is the metal value of your item before the buying spread.
Why 18K is worth less than you might think
An 18K piece contains a quarter less gold than 24K by weight. Stone-set European jewellery is often 18K, so a visually impressive piece can carry a modest gold value. This is not a low offer — it is the metal content.
Tip
Our online calculator applies these factors automatically to the live rate, for both gold and silver.
Ready to sell your gold at today's live rate?
Free XRF testing, certified weighing and instant cash payment at any of our 17+ branches island-wide.