Live spot prices from gold-api.com. Prices are indicative reference rates, not investment advice. Amounts stay in this browser.
Calculation details
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What does this calculator estimate?
At a $2,400/oz gold spot, 1 troy ounce of 24k gold is worth about $2,400; 10 g of 18k gold is worth about 10 x 0.75 x $77.16, about $578.71. Value = weight x purity x spot price.
- 1 troy ounce = 31.1034768 g (Wikipedia).
- 24k gold is 99.9 percent pure; 18k is 75 percent pure.
- Spot prices move continuously during market hours (World Gold Council).
How precious-metal value is estimated
The value starts from the metal's live spot price and scales by weight and purity. A coin or bar's fineness (for example 999 for fine gold or 925 for sterling silver) is the fraction of pure metal it contains, so the tool values only the pure metal content.
Spot prices move throughout the trading day, and the estimate reflects the live reference at the moment you calculate. It is a valuation tool, not a buy or sell quote.
What the estimate does not include
Dealers buy below spot and sell above it, and premiums vary by product, condition, and market. The estimate is the raw metal value; actual offers from a dealer will differ by the buy-sell spread and any numismatic or collectible premium.
Using it for planning
Use the calculator to compare the metal content of items, check a scrap value before visiting a dealer, or track how a weight's value changes with price. It gives you an informed starting point so you can recognize a fair offer.
How this calculator works
Formula
Value = weight × purity × spot price per unit. The tool converts between troy ounces and grams (1 troy oz = 31.1034768 g) and applies the metal's fineness (24k gold = 99.9% pure, 18k = 75%) to live spot prices.
Worked example
At a $2,400/oz gold spot, 1 troy oz of 24k gold is worth about $2,400; 10 g of 18k gold is worth about 10 × 0.75 × $77.16 ≈ $578.71.
Assumptions to verify
Frequently asked questions
What is a gold price calculator and how does it work?
A gold price calculator is a free browser-based tool that estimates the value of gold, silver, and other precious metals based on real-time spot prices. Simply enter the weight, purity, and quantity of your item, and the calculator instantly returns an estimated market value, no signup or download required.
Do I need to create an account or provide personal information to use this gold price calculator?
No. This gold price calculator is entirely no-signup and private. It runs directly in your browser, meaning no data is sent to a server, no account is needed, and your calculations remain completely on your device.
How accurate are the results from this gold price calculator?
The calculator provides estimated values based on current live spot prices for gold, silver, and other precious metals. Accuracy depends on the spot price data source and the purity/weight you input. It is a helpful planning tool but should not be considered a definitive appraisal, actual resale or buyback prices may vary by dealer.
What does purity or fineness mean?
Purity is the share of the metal in the item: 24k gold is 99.9% pure, 18k is 75%, 14k is 58.5%. The value scales directly with purity — 18k gold is worth 75% of the same weight of 24k.
What is a troy ounce?
The standard precious-metal weight: 1 troy oz = 31.1034768 grams (vs 28.35 g for a regular ounce). Gold and silver prices are quoted per troy ounce.
Why is the retail price higher than spot?
Spot is the wholesale metal price. Retail items add premiums for fabrication, design, and dealer margin — so a coin or jewelry piece sells above its melt value.
How often do the prices update?
The tool pulls live spot prices from its data source when you calculate, so the estimate reflects the latest available quote. Real market prices move continuously during trading hours.
Is this financial advice?
No. The calculator values metal by weight and spot price only; it's a reference tool, not a recommendation to buy, sell, or hold any metal.
Cite this tool
BoringToolsKit. “Gold, Silver & Precious Metals Price Calculator.” boringtoolskit.com/gold-silver-precious-metals/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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