🥇 Gold & Silver Bullion Karat Price Calculator
Calculate the spot melt value of gold and silver bullion, coins, and jewelry across 24k, 22k, 18k, 14k, and 10k purities in grams, tola, and troy ounces.
What Gold & Silver Bullion Karat Price Calculator Does
This calculator converts a weight and a purity into the metal value of an item at the spot price you enter. Weight can be given in troy ounces, grams, kilograms or tola, and gold purity in karats from 10K to 24K.
The number it produces is melt value: what the pure metal in the item is worth at spot. It is the ceiling on what a piece is worth as metal, not an offer price, and for jewellery it is not the resale value either — a piece with craftsmanship, a brand or stones may be worth considerably more intact than melted, and a buyer will pay a percentage of melt rather than melt itself.
The spot price is entered by hand rather than fetched live. Every other bullion calculator pulls a live quote, so this is a genuine shortfall and worth being direct about: the figure shipped as a starting value is dated on the page, and you should paste today's spot price over it before trusting any output. What the tool does instead is show its working, so the arithmetic can be checked against any price you like.
How to Use Gold & Silver Bullion Karat Price Calculator
- Select Gold or Silver metal mode
- Input weight quantity and unit (Troy Ounces, Grams, Tola, or Kilograms)
- Choose karat purity to compute exact total dollar value
Formula Used by Gold & Silver Bullion Karat Price Calculator
Metal value from weight and purity
value = (weight in troy ounces) × purity × spot price per troy ounce
- purity
- Karats ÷ 24 for gold. 14K is 14 ÷ 24 = 0.5833
- spot price
- Market price per troy ounce of the pure metal
- troy ounce
- Exactly 31.1034768 grams — not the 28.35 g ounce used for groceries
Worked example
10 grams of 22K gold at a $2,510 spot price.
- Convert: 10 ÷ 31.1034768 = 0.321507 troy oz
- Purity: 22 ÷ 24 = 0.916667
- Pure content: 0.321507 × 0.916667 = 0.294715 troy oz
- Value: 0.294715 × 2,510 = 739.74
Result: $739.74 of gold content. The same 10 grams as 14K would be $470.74 and as 10K $336.24 — the weight is identical, the metal in it is not.
Troy ounces against ordinary ounces
1 troy oz = 31.1034768 g; 1 avoirdupois oz = 28.349523125 g; ratio = 1.097143
- avoirdupois ounce
- The everyday ounce used for food and post, and the one a kitchen scale reports
Worked example
Weighing gold on a kitchen scale that reads 1 "ounce" and pricing it at the spot quote for a troy ounce.
- A kitchen-scale ounce is 28.349523125 g
- That is 28.349523125 ÷ 31.1034768 = 0.911458 troy oz
- At $2,510: 0.911458 × 2,510 = $2,287.76, not $2,510
Result: An overstatement of 9.71% if the two ounces are treated as the same unit. Precious metals are always quoted per troy ounce; a scale that does not say "troy" is almost certainly not reporting one.
Gold Value Per Gram by Karat — at $2,510 per Troy Ounce
Pure gold is $80.70 per gram at this spot price. Multiply by karat ÷ 24. Recompute at your own spot price; these scale linearly.
| Karat | Purity | Per gram | Per 10 grams |
|---|---|---|---|
| 24K | 100.0% | $80.70 | $806.98 |
| 22K | 91.7% | $73.97 | $739.74 |
| 18K | 75.0% | $60.52 | $605.24 |
| 14K | 58.3% | $47.07 | $470.74 |
| 10K | 41.7% | $33.62 | $336.24 |
| 9K | 37.5% | $30.26 | $302.62 |
Weight Units, Exactly
The tola is exactly 0.375 troy ounces, which is why it converts cleanly. Values shown for 24K gold at $2,510 per troy ounce.
| Unit | In grams | In troy ounces | Value at 24K |
|---|---|---|---|
| 1 gram | 1.0000 | 0.032151 | $80.70 |
| 1 tola | 11.6638 | 0.375000 | $941.25 |
| 1 avoirdupois ounce | 28.3495 | 0.911458 | $2,287.76 |
| 1 troy ounce | 31.1035 | 1.000000 | $2,510.00 |
| 100 grams | 100.0000 | 3.215075 | $8,069.84 |
| 1 kilogram | 1,000.0000 | 32.150747 | $80,698.37 |
Melt Value Is the Ceiling, Not the Offer
What 10 grams of 14K gold returns at different payout percentages. Scrap buyers and refiners quote a percentage of melt; the figure is negotiable and worth asking for explicitly before you hand anything over.
| Payout as % of melt | You receive | You give up |
|---|---|---|
| 100% (melt value) | $470.74 | $0.00 |
| 90% | $423.67 | $47.07 |
| 80% | $376.59 | $94.15 |
| 70% | $329.52 | $141.22 |
| 60% | $282.44 | $188.30 |
| 50% | $235.37 | $235.37 |
How to Read Your Result
Ask what percentage of melt you are being offered
Most of the calculators ranking for this search belong to companies that buy scrap gold, and none of them publishes its payout percentage. That percentage is the entire negotiation. Knowing the melt value turns an opaque offer into a simple ratio — an offer of $330 on 10 grams of 14K at this spot price is 70% of melt, and you can now say so. Refining genuinely costs money and a buyer has to make a margin, so nobody pays 100%; the point is to know which number you are being offered, not to expect melt.
The karat stamp is a claim about purity, not a measurement of it
Karat marks describe the intended alloy. US law permits a tolerance between the mark and the assayed content, and unmarked, worn, plated or filled items can be anything at all — "gold filled" and "gold plated" contain a fraction of the gold their appearance suggests and are generally worth close to nothing as scrap. A buyer will test rather than trust the stamp, and so should you before pricing a piece off this calculator.
Bullion sells closer to spot than jewellery does
Recognized bullion — a sovereign mint coin or a hallmarked bar — trades near spot because it needs no assay and no refining, and it usually carries a premium over spot when bought. Jewellery has to be tested, refined and separated from stones and solder, and the payout reflects that. The same gram of gold therefore fetches materially different money depending on the form it is in, which is why melt value alone never determines what a piece is worth.
Spot moves, and this figure does not move with it
Gold and silver reprice continuously through the trading week. A valuation from a price entered this morning is already approximate this afternoon, and a figure from last month may be badly wrong. That matters most in exactly the situation this tool is used for — walking into a shop with a number in your head. Refresh the spot price immediately before you use the result, and remember that the buyer is quoting off a live feed even when you are not.
Limitations & Accuracy Notes
- No live price feed. The spot price is typed in, and every other bullion calculator fetches one automatically. The default figure is dated on the page and should be replaced before use.
- Silver purity is fixed at .999 fine. Sterling at .925, coin silver at .900 and other alloys are not selectable, so a sterling item must be priced by multiplying the .999 result by 0.925 yourself.
- Gold purity is entered in karats only. Decimal finenesses used on bullion — .9999, .995 — and non-standard alloys cannot be entered directly.
- Melt value only. It does not price craftsmanship, brand, antiquity, numismatic premium, gemstones, or the premium a bullion coin commands over its metal content.
- No dealer spread, refining fee, assay charge, shipping or insurance, all of which sit between melt value and what changes hands.
- Platinum, palladium and rhodium are not supported.
- The weight entered is assumed to be the metal alone. Stones, clasps, springs and solder are included in a scale reading and are not gold, so an unremoved setting inflates the result.
- USD only, and no sales tax treatment — several US states tax bullion purchases differently from jewellery.
Frequently Asked Questions
What is the difference between a Troy Ounce and a Standard Ounce?
How does karat purity affect gold value?
What is a troy ounce?
Why does a dealer charge more than the spot price?
What does purity mean for value?
Will I get spot price when I sell?
Is this investment advice?
References & Further Reading
- NIST Handbook 44, Appendix C — General Tables of Units of Measurement — Federal reference for the troy ounce at 31.1034768 grams and the avoirdupois ounce at 28.349523125 grams — the 9.71% distinction above
- 16 CFR Part 23 — Guides for the Jewelry, Precious Metals, and Pewter Industries — The regulation text governing how gold content may be described and marked in US commerce, including karat marking and the treatment of plated and filled articles