Gold Gram Calculator
Gold Price Per Gram Calculator works out Melt value and Value at the payout entered from Spot price per troy ounce (from your dealer or price feed), Weight and Purity standard. The default figures on this page give melt value of 77.16; change any entry and the result, the working and the sources update together.
Your figures
Updates as you typeHow this is worked out
4 steps
- Gross weight = 1 g = 1 g.
- Fine metal = 1 g x 1 = 1 g.
- Fine metal = 1 g / 31.1034768 g per troy ounce = 0.03215 ozt.
- Melt value = 0.03215 ozt x 2400 = 77.16.
Its 5 worked examples are re-run on every release, last on 15 September 2026. What changed
Sources and references
4 sources
What the Gold Price Per Gram Calculator calculates
Converts a weight and purity of gold, silver, platinum or palladium - or a face value of US silver coin - into fine metal content and its melt value at the spot price you supply, plus a dealer scrap offer at a chosen payout.
How to use this Gold Price Per Gram Calculator
Enter Spot price per troy ounce (from your dealer or price feed), Weight, Purity standard and Karat. Melt value updates as you type. Change one figure at a time to see what drives the result.
How the result is worked out
Open “How this is worked out” beside the result for the step-by-step calculation behind Melt value, Value at the payout entered and Fine metal fraction.
The method follows NIST Special Publication 811, Guide for the Use of the International System of Units - the 1959 international yard and pound agreement fixes 1 grain = 64.79891 mg exactly, so 1 troy ounce = 480 grains = 31.1034768 g, FTC Guides for the Jewelry, Precious Metals, and Pewter Industries, 16 CFR 23.4 - karat is 1/24 part fine gold, United States Mint, Coin Specifications - weights and compositions of US circulating silver coinage and LBMA precious metal prices - the benchmark the spot price input should be taken from (licensed live data; supply it yourself).
What you can compare
Change one input at a time to see how it affects Melt value, Value at the payout entered and Fine metal fraction. The inputs you can vary are Spot price per troy ounce (from your dealer or price feed), Weight, Purity standard, Karat, Fineness (parts per thousand) and Purity.
Understanding Melt value, Value at the payout entered and Fine metal fraction
A metal-content valuation only. It uses the spot price you enter, applies no bid/ask spread, refining loss, assay, numismatic premium or tax, and is not an offer or an appraisal.
Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.
See something wrong? Report a problem with this calculator
Frequently asked questions
How much is 1 gram of gold worth today?
On the figures this page opens with — spot price per troy ounce (from your dealer or price feed) 2,400 currency/ozt, weight 10 and karat 14 — the melt value is 77.16. No single number fits everyone: change any figure above and the answer updates as you type, with each step of the arithmetic beside it.
How to calculate 1 gram of gold?
Converts a weight and purity of gold, silver, platinum or palladium - or a face value of US silver coin - into fine metal content and its melt value at the spot price you supply. Open “How this is worked out” beside the result to see each step for your own figures.
How much is 1 gram of 14K gold worth?
It needs Spot price per troy ounce (from your dealer or price feed), Weight, Purity standard, Karat, Fineness (parts per thousand) and Purity. Nothing else is required, and the figures stay in your browser.
How much is 0.5 g of gold?
The result gives Melt value, Value at the payout entered, Fine metal fraction, Gross weight, Fine metal content and Price per gram of fine metal, each labelled with its unit so the figure can be read on its own.
What information do I need for the Gold Price Per Gram Calculator?
You need Spot price per troy ounce (from your dealer or price feed), Weight, Purity standard, Karat, Fineness (parts per thousand), Purity, US silver coin series and Face value of coin. The page opens with default figures that give melt value of 77.16, so you can see the scale before entering your own.
What does this Gold Price Per Gram Calculator show?
It shows Melt value, Value at the payout entered, Fine metal fraction, Gross weight, Fine metal content, Price per gram of fine metal, Melt value per gram of item and Basis, with the working and any warnings for your entries.