Calculate the live value of gold or silver in grams, kilograms or troy ounces.
Basis: International spot prices as of lookup time. Weights are troy ounces, grams and kilograms, where 1 troy ounce = 31.1035 g·2026-08-28 verified·Editorial policy
Tool Overview & Key Purpose
Looks up international spot prices for gold, silver, platinum and palladium and converts between weight and value. Spot is the price of pure bullion traded by the troy ounce, so there is an extra step between it and the price of a 14K ring or a retail gold bar.
Step-by-Step Usage Instructions
1STEP 1
Choose a metal and enter whichever you know — a weight (grams, troy ounces) or a value.
2STEP 2
The other side converts instantly at the spot price as of lookup.
3STEP 3
Watch the unit: a troy ounce is 31.1035 g, not the 28.35 g of an avoirdupois ounce.
4STEP 4
For a real-world price, multiply by purity (14K is 58.5%, 18K is 75%) and add fabrication cost and dealer premium.
Real-World Scenarios & Practical Cases
3 Practical CasesScenario #1
Estimating what jewellery you own is worth in metal
A 20 g 14K necklace holds 20 × 0.585 = 11.7 g of pure gold. Multiplying that by the per-gram spot price gives the ceiling; a buyer deducts refining costs and margin from it.
The karat is usually stamped on the piece (585, 750).Scenario #2
Working out the premium on a bullion bar
Dividing the dealer price by spot shows the premium as a percentage. Smaller bars carry more (a 1 g bar can run 10–20%) and it falls at one troy ounce and above.
You pay the premium when buying and rarely recover it when selling.Scenario #3
Reading the gold–silver ratio
The gold price divided by the silver price. It is used to compare the two metals against their historical range, though it is an observation rather than a trading signal.
Look both up and divide — compare figures from the same lookup time.Quote basis and units
Value = weight in troy ounces × spot price
1 troy ounce = 31.1035 g
Real-world estimate = weight × purity × per-gram spot + fabrication + dealer premium
(14K = 0.585, 18K = 0.750, 24K ≈ 0.999)Pro Tips & Key Considerations
Confusing troy and avoirdupois ounces puts you off by about 9%. Precious metals are always quoted in troy ounces.Spot is quoted per troy ounce of pure metal — divide by 31.1035 before comparing with a per-gram jewellery price.Spot is denominated in dollars, so a price in any other currency moves with both the metal and the exchange rate.The buy/sell spread is wider on silver than on gold; on small amounts the spread can outweigh the move you were hoping for.
Frequently Asked Questions (FAQ)
Sources & References
gold-api.com — Live Gold & Silver Price Data SourceInvestopedia — "Spot Price" definitionBasis: International spot prices as of lookup time. Weights are troy ounces, grams and kilograms, where 1 troy ounce = 31.1035 g · 2026-08-28 verified