How much is 10K gold worth by weight?
These examples use 41.7% gold content and no stones or non-gold deductions. Values update when you change the reference price; the examples always remain 10K / 417 even if you change the calculator's purity.
Gold API reference · $4,195.60 USD/troy oz · as of Oct 11, 2026, 03:44 PM UTC
| Item weight | Pure gold content | Estimated melt value |
|---|---|---|
| 1 g | 0.417 g | $56.25 |
| 5 g | 2.085 g | $281.25 |
| 10 g | 4.170 g | $562.50 |
| 20 g | 8.340 g | $1,125.00 |
A worked 10K calculation
For a 10 g item with no non-gold deductions, multiply 10 by 0.417 to obtain 4.17 g of pure gold. Divide the reference of $4,195.60 USD per troy ounce by 31.1034768, then multiply by 4.17. The estimated metal value is $562.50 USD.
If stones and other non-gold parts weigh 2 g, calculate the gold content on the remaining 8 g, not the full 10 g. A hallmark is a starting assumption; an assay may find a different purity.
Metal value, buyer offer and retail price
Metal value estimates the gold content. A buyer's net cash offer is what you receive after any fees and deductions. Retail jewelry prices may include labor, brand premiums, stones and taxes. These figures answer different questions.
The 70% and 90% figures in the calculator are hypothetical arithmetic examples, not typical payouts or a fair-price range. Compare itemized net quotes using the same tested weight and purity. Compare multiple buyer quotes or read the calculation method. Enter your item weight, purity and any non-gold deduction again on the comparison page; inputs are not carried over automatically.
What is 10K gold?
10-karat gold is an alloy containing approximately 41.7% pure gold and 58.3% other metals. The added metals make it relatively durable, which is why 10K is often used in everyday rings, chains and bracelets in the United States.
10K and 417 hallmarks
An item may be marked “10K,” “10KT” or “417.” The number 417 represents approximately 417 parts of gold per thousand. A hallmark is useful evidence, but wear, repairs, plating and counterfeit marks can make professional testing necessary.
Exact 10-karat fineness is 10/24, or about 41.6667% gold. A 417 mark expresses 417 parts per thousand, or 41.7%. This page uses the existing 0.417 hallmark factor, so its estimates differ slightly from an exact 10/24 calculation. Use tested fineness when available.
How the per-gram value is estimated
The displayed market reference is converted from a troy-ounce price using 31.1034768 grams per troy ounce. You can edit the price before calculating.
Selling 10K gold
Ask each buyer to state the measured weight, tested purity, fees and final net amount. Compare the final amount with the calculator rather than comparing headline percentages that may use different assumptions.