Gold Calculator — Calculate Current Gold Value
Gold Value
125.19 €
1.00 g x 1 x 125.1934 €/g = 125.19 €
Krugerrand, Maple Leaf & Co. — Check weight against target data incl. melt value.
Material value for any alloy — 333, 585, 750 and more.
Calculating Gold Value — How It Works
The gold value of a piece of jewelry, a coin or a bar can be determined with a simple formula. Our gold calculator uses exactly this calculation and updates the spot price automatically:
Calculation Formula
Gold Value = Weight (g) × Fineness × Gold Price per Gram
Example: 10 g × 0.750 (18 carat) × 92.50 EUR/g = 693.75 EUR
What Is Fineness?
Fineness (also purity) indicates how much pure gold is contained in an alloy. It is expressed in thousandths: 999 gold consists of 99.9% pure gold, 750 gold of 75% gold and 25% other metals such as copper or silver. In the carat system, 24 carat equals fine gold, 18 carat equals 750 gold and 14 carat equals 585 gold.
To calculate the value, you multiply the fineness as a decimal by the current fine gold price per gram. The lower the fineness, the smaller the pure gold content and thus the material value. For jewelry with 333 fineness (8 carat), less than one third of the total weight consists of gold.
Why the Gram Price Matters
The international gold price is quoted in US dollars per troy ounce. For everyday calculations, however, the gram price in your local currency is what matters. It is derived from the ounce price, the exchange rate and the conversion from troy ounces to grams. Our gold calculator performs this conversion automatically and shows you the current gram price for each alloy.
The gram price is so practical because gold jewelry, dental gold and small bars are weighed in grams. You only need to know the weight and fineness to instantly determine the current material value.
Gold Alloys in Detail
Pure gold is too soft for most applications. Therefore it is alloyed with other metals to achieve hardness, scratch resistance and color variations. The fineness determines the gold content and thus the material value. Here is an overview of all common alloys:
Fine Gold — 24 Carat
99.9% pure gold. Used for: investment bars (1 g to 12.5 kg), bullion coins such as Maple Leaf, Vienna Philharmonic, Kangaroo and China Panda. Fine gold is very soft and prone to scratching, which is why it is rarely used for jewelry. The material value is virtually identical to the spot price.
Krugerrand Alloy — 23.7 Carat
98.6% gold, remainder copper. The South African Krugerrand contains exactly 1 troy ounce (31.1035 g) of gold, but weighs a total of 33.93 g due to the copper content. The copper gives the coin its characteristic reddish-orange color and increases scratch resistance. One of the best-selling gold coins worldwide since 1967.
Crown Gold — 22 Carat
91.67% gold. Traditional alloy of British Sovereigns and American Eagles. The addition of copper and silver provides good wear resistance, which is why this alloy has been used for circulating coins for centuries. Indian wedding jewelry is also often made in 22 carat.
Coin Gold — 21.6 Carat
90% gold, typically 10% copper. Historical gold coins such as the Swiss Vreneli, French Napoleons (20 Francs) and the old German gold Mark (10/20 Mark Imperial era) were minted in this alloy. The Mexican Centenario and Austrian Ducats also use 900 gold.
18-Carat Gold
75% gold, 25% copper/silver/palladium. The most popular alloy for high-quality jewelry worldwide. Offers the best compromise between gold content, durability and color variety. By varying the secondary metals, yellow gold, rose gold and white gold are created. In Italy and France, 750 is the standard for fine jewelry.
14-Carat Gold
58.5% gold. One of the most commonly used jewelry alloys worldwide, especially popular in Central Europe, Scandinavia and the USA. Harder than 750 and therefore more suitable for everyday wear in wedding rings, chains and bracelets. The value for money makes 585 gold a popular choice for wearable jewelry. Stamped as "14K" in the USA.
9-Carat Gold
37.5% gold. Widely used in the UK and Ireland, less common in continental Europe. The lower gold content makes this alloy affordable and very robust, though it can cause discoloration on sensitive skin. In the EU, 375 is the lowest fineness that may still be sold as "gold".
8-Carat Gold
33.3% gold. Historically found in some European countries, but since 2019 it can no longer be declared as "gold" under EU regulation (minimum standard: 375). Nevertheless, old jewelry in 333 is frequently bought for melting. The material value is significantly below the retail price, which is why selling often only makes sense when the gold price is high.
Tip: When selling gold, look for the hallmark (stamp) on the jewelry piece. Reputable pieces always bear a fineness stamp such as "750", "585" or "14K". If there is no hallmark, you should have the fineness determined by a precious metals assayer before selling.
Gold Price per Gram vs. Troy Ounce
The gold price is internationally quoted in US dollars per troy ounce. This is the unit used on the London exchange (LBMA), the New York COMEX and the Shanghai Gold Exchange (SGE). In Europe, however, most people think in grams and euros. For correct conversion, two factors must be considered:
Conversion Example
Assume the current gold price is 2,900 USD/oz and the EUR/USD exchange rate is 1.05. Then:
- ◆ Step 1: USD to EUR — 2,900 USD ÷ 1.05 = 2,761.90 EUR/oz
- ◆ Step 2: Ounce to grams — 2,761.90 EUR ÷ 31.1035 = 88.80 EUR/g
Why Europeans Calculate in Grams
While international gold trading is conducted in troy ounces, the gram price has become the everyday measure in Europe. This has practical reasons: jewelry is weighed in grams, bars come in gram denominations (1 g, 5 g, 10 g, 20 g, 50 g, 100 g, 250 g, 500 g, 1 kg), and the EUR/USD exchange rate plays a central role for European investors anyway.
Our gold calculator shows you the gram price for each alloy in your currency, so you can read off the material value of your gold directly without having to convert yourself.
When Is Selling Gold Worthwhile?
The spot price (exchange price) is not the price you receive when selling. Between the spot price and the actual purchase price from a dealer there is always a margin. This difference varies depending on product, dealer and market conditions. Anyone who wants to sell smartly should understand these mechanisms.
Typical Purchase Margins by Product Type
| Product Type | Buyback in % of Spot | Discount |
|---|---|---|
| LBMA Bars (100 g, 1 kg) | 98–99% | 1–2% |
| Bullion Coins (1 oz) | 97–99% | 1–3% |
| Small Bars (1–10 g) | 93–97% | 3–7% |
| Jewelry (750, 585) | 85–95% | 5–15% |
| Dental Gold / Scrap Gold (333) | 70–90% | 10–30% |
Tips for the Best Price
- ◆ Get multiple quotes: Compare at least 3 buyers. Online buyers, local refineries and precious metals dealers have different terms.
- ◆ Know the spot price: Use our gold calculator to determine the current material value before selling. This way you can immediately see whether an offer is fair.
- ◆ Sell larger quantities: From 100 g upwards, the terms improve significantly. Collect smaller pieces rather than selling individually.
- ◆ Mind the holding period: Physical gold can be sold tax-free after a 12-month holding period in many jurisdictions. An early sale may incur significant capital gains tax on the profit.
- ◆ Keep original packaging: Bars in sealed blister packaging (CertiCard) fetch better prices than loose bars, as no re-testing is required.
Tip: Reputable buyers always calculate the gold value based on the current spot price and published fineness. Always ask for the calculation to be disclosed and insist on a written statement showing the underlying gold price.