How It Works
The metal value is the coin weight in grams times the live price per gram times the purity fraction. Collector and dealer premiums are not included, so a rare coin can be worth more.
How to Use
Enter the coin weight, choose the unit and enter the purity percent, then press Calculate.
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Frequently Asked Questions
How is a gold coin valued?
By its metal content: weight times purity times the live gold price per gram. Rarity and condition can add a premium on top.
Does the coin calculator use the live gold price?
Yes. It uses the live spot gold price from the ToolZana feed, with the last-updated time shown on the page.
What purity is a 22K coin?
22K is 91.67% pure gold. Enter 91.67 as the purity percent.
Does it include the collector premium?
No. Collector, rarity and dealer premiums are not included, so the result is the metal value only.
What weight is a sovereign?
A full gold sovereign weighs about 7.99 grams at 22K purity. Enter the exact weight of your coin for the best result.