Gold price calculator: value gold, silver, platinum, and palladium by weight, purity, and current spot price per gram or ounce. Free, editable rates, no signup.
Live spot prices from gold-api.com. Prices are indicative reference rates, not investment advice. Amounts stay in this browser.
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Every figure above is calculated locally in your browser from the assumptions shown. No inputs are sent anywhere. See the methodology section below for how this tool works.
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Gold price calculator: value gold, silver, platinum, and palladium by weight, purity, and current spot price per gram or ounce. Free, editable rates, no signup.
500 grams of silver at $48.00 spot is worth $771.62.
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.
BoringToolsKit. “Gold, Silver & Precious Metals Price Calculator.” boringtoolskit.com/gold-silver-precious-metals/. Free to reference in articles, syllabi, and answer posts with a link.
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Worked example: pricing 500 grams of silver
Say the spot price is $48.00 per troy ounce and you hold 500 grams of silver. The calculator first converts grams to troy ounces using the fixed factor 1 troy oz = 31.1034768 g. That gives 500 / 31.1034768 = 16.0754 troy oz (the calculator multiplies by the ratio 1000/31.1034768 instead of dividing, which is the same operation to full precision).
Then it multiplies through: 16.0754 x $48.00 = $771.62. Equivalently, the tool can work per gram: $48.00 / 31.1034768 = $1.5432 per gram, and 500 x $1.5432 = $771.62. Both routes land on the same cent because the conversion constant is exact, not rounded. Notice the trap this avoids: a troy ounce (31.10 g) is about 9.7% lighter than an avoirdupois ounce (28.35 g). Pricing 500 g as if it were 17.64 regular ounces would overstate the value by roughly $74. A kilogram bar of gold at $3,800/oz works out to 32.1507 troy oz x $3,800 = $122,172.84, so a 1% unit mistake on gold is a four-figure error.
What spot value gets wrong in real transactions
Spot is a wholesale reference, not a price you can trade at. Physical bullion typically sells 2 to 5 percent over spot when you buy and 1 to 3 percent under when you sell, so a 100 oz silver holding worth $4,800 at spot might realize about $4,704 on a 2% dealer discount, a $96 haircut before any shipping or assay fees. On small items the gap is worse: a 1 oz silver round often retails 15 to 30 percent above spot because minting and distribution costs are fixed per coin, not per dollar of value.
Purity adds a second adjustment. 925 sterling silver is only 92.5% metal, so 100 g of sterling contains 92.5 g of fine silver, about 8.9% less value than the same weight marked as .999. Scrap buyers also discount for unknown assaying: mixed jewelry lots frequently clear 10 to 20 percent below melt. Finally, the rarer metals on the list trade nothing like gold. Rhodium, iridium, and ruthenium have thin dealer markets with wide spreads, occasional multi-month liquidity gaps, and retail prices that can swing more than 30% in a quarter, so the calculator's spot snapshot is a rougher guide there than for gold or silver.
