Gold Melt Calculator

Created by AbdulRafay Moeen
Reviewed by Wojciech Sas, PhD candidate and Steven Wooding
Last updated: May 04, 2022

Our gold melt calculator can help you observe the actual monetary value based on your gold's weight and its purity. It will also help you calculate its bidding and asking price based on the spread.

From the following article, you will learn:

  • How to calculate gold melt value using the calculator;
  • How to calculate the gold jewelry melt value manually; and
  • How to calculate gold melt of 18K, 14K, and other karats.

What is a karat and how does it measure the purity of gold?

A karat is a unit of comparative measurement for the purity of gold in metal alloys. We consider 24 karats or 24K as the purest form obtainable.

Here's a table showing different karats along with their level of purity.

A table showing purity levels of karats.

Karat

Purity

24K

99.9%

23K

95.83%

22K

91.67%

21.6K

90%

21K

87.5%

20K

83.33%

19K

79.17%

18K

75%

17K

70.83%

16K

66.67%

15K

62.5%

14K

58.33%

13K

54.17%

12K

50%

11K

45.83%

10K

41.67%

9K

37.5%

8K

33.33%

💡 A carat is different than a karat. A carat measures the weight of gemstones like diamonds, whereas a karat is a unit measuring the purity of a natural element like gold.

How to calculate gold melt value using the calculator

Here's how we calculate the gold coin melt value using the calculator:

👑 Quality

  1. Enter the weight of gold, e.g., 10 grams.

  2. Select the purity of the gold, e.g., 24 karat.

  3. The calculator will automatically set the purity, i.e., 99.9%.

💸 Value

  1. Enter the current market price of the gold, e.g., 2000 USD / troy ounce.

  2. The gold melt calculator will then display your gold's possession value, i.e., 642.37 USD.

🏛️ Trade / Exchange

  1. The spread decreases the bid price and increases the ask price based on the given % margin.

  2. The bid price is the price a buyer would be willing to pay.

  3. The asking price is the price that a seller would be willing to accept.

Now that you understand how to use the gold melt value calculator for jewelry, coins, etc., let's learn how to calculate the gold melt value manually.

Manually calculate gold jewelry melt value

We use the following formula to calculate the gold melt value:

G=M×(Q÷100)×P\footnotesize G = M \times (Q \div 100) \times P

where:

  • GG – Value of gold in possession;
  • MM – Mass of the gold in possession;
  • QQ – Quality of gold in percentage; and
  • PP – Price per unit mass of gold.

(Where we measure the price per unit mass and mass of the gold in possession on the same weight scale.)

Let's take an example and calculate a melted gold coin's value, with a weight of 1.0909 troy ounces and purity at 22 karat.

At the time of writing this article, the price of gold is 1,915 USD per troy ounce.

Placing the values in the formula, we get:

G=1.0909×(91.67÷100)×1,915=1,915.05\footnotesize \begin{align*} G &= 1.0909 \times (91.67 \div 100) \times 1,915\\ &= 1,915.05 \end{align*}

Thus, the value of our melted gold coin in possession is 1,915.05 USD.

FAQ

What is the melting point of gold?

Pure gold melts at 1,945 °F, about 1,063 °C or 1,336 K. It boils at 2,700 °F, that's almost 1,482 °C or 1,755.3 K. For comparison, an average cooking fire can reach up to 700 degrees Fahrenheit. You'll need a propane torch if you plan on melting gold at home.

How pure is 14 karat gold?

58.33%, is the purity of 14 karat gold. In other words, if we melt 14K gold and calculate its weight, we'll have about 58.33% of pure gold, and the rest will be other elements and impurities.

What is 10 karat gold melt value of 1 gram at 2000 USD per troy ounce?

26.79 USD is the value of 10 karat gold weighing 1 gram at 2,000 USD per troy ounce.

We obtain this value by using the following formula:

Value of gold = Weight of gold × (Quality of gold / 100) × Price per unit mass of gold

How do I calculate gold coin melt value?

Here are the steps for calculating gold coin value:

  1. Measure the weight of the gold.

  2. Note the purity of the gold in percentage.

  3. Find the current price per unit mass of gold.

  4. Multiply the weight with the quality (divided by 100) and the current price, which mathematically is:

    Value of gold = Weight of gold × (Quality of gold / 100) × Price per unit mass of gold

AbdulRafay Moeen
👑 Quality
Weight of gold
oz
Karat
24 karat
Purity
%
💸 Value
Market price
$/
oz
Possession value
$
🏛️ Trade / Exchange
Spread
%
Bid price
$
Ask price
$
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