Gold · U.S. search trend · Updated 2026-06-13
Gold Price per Gram Calculator
Enter a gold weight in ounces, grams, or kilograms to estimate its metal value from the latest available XAU/USD price.
XAU latest close
$4,308.18
Daily change
-0.18%
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Gold value calculator
Estimated metal value
$4,308.18
$4,308.18/oz
Estimate only. Physical products may include premiums, taxes, shipping, and refining costs.
Key takeaways
Gold conversion formulas
The gold price per gram is the price per troy ounce divided by 31.1034768. The price per kilogram is the price per ounce multiplied by 32.1507466. These conversions estimate the raw metal value before premiums, taxes, shipping, or refining costs.
Adjusting for gold purity
The calculator assumes pure 24-karat gold. For 22-karat gold, multiply the pure-gold value by about 0.9167. For 18-karat gold, multiply by 0.75. For 14-karat gold, multiply by about 0.585. Hallmarks and professional testing are more reliable than visual inspection.
- 24K: approximately 99.9% gold
- 22K: approximately 91.67% gold
- 18K: 75% gold
- 14K: approximately 58.5% gold
Why a dealer quote can differ
Coins, bars, and jewelry do not trade at the same price as unallocated wholesale gold. Product scarcity, minting costs, condition, brand, order size, and dealer inventory all affect the premium. A calculator is useful for establishing a metal-value baseline, not a guaranteed transaction price.
Frequently asked questions
How do I calculate gold price per gram?
Divide the current gold price per troy ounce by 31.1034768.
Does this calculator include dealer premiums?
No. It estimates raw metal value before premiums, taxes, shipping, and transaction costs.
Can I use the calculator for 18K jewelry?
Yes, but multiply the pure-gold result by 0.75 and verify the item's actual purity and weight.