A Gold Weight Calculator helps you find out how much pure gold is in an item, such as jewelry, coins, or bars. It is useful because gold is often mixed with other metals to make it harder and more durable. The calculator works by using the weight and purity (karat) of the gold to determine the actual amount of 24k gold it contains. This tool is commonly used in jewelry trade, gold buying and selling, and personal investment purposes. It also offers quick weight conversions between different units like grams, troy ounces, and pennyweights.
formula
This formula determines the actual weight of fine (24k) gold contained within a gold alloy item.
Pure Gold Weight = Total Item Weight × (Karat / 24)
Variable Explanations
Total Item Weight: The weight of the gold item measured on a scale, in grams, ounces, or any unit you choose.
Karat: The purity of the gold, usually 10K, 14K, 18K, 22K, or 24K.
24: Represents pure gold.
Example Calculation:
If you have a 14K gold chain weighing 50 grams:
Pure Gold Weight = 50 × (14 / 24)
Pure Gold Weight = 29.17 grams
This means your 50-gram chain contains 29.17 grams of pure gold.
Primary Formulas 2: Weight Unit Conversion
Conversions to Grams (g):
From Troy Ounces (ozt):
Weight in Grams = Weight in Troy Ounces × 31.1035
From Standard Ounces (oz):
Weight in Grams = Weight in Standard Ounces × 28.3495
From Pennyweight (dwt):
Weight in Grams = Weight in Pennyweight × 1.55517
Conversions from Grams (g):
To Troy Ounces (ozt):
Weight in Troy Ounces = Weight in Grams ÷ 31.1035
To Standard Ounces (oz):
Weight in Standard Ounces = Weight in Grams ÷ 28.3495
To Pennyweight (dwt):
Weight in Pennyweight = Weight in Grams ÷ 1.55517
Gold Purity Quick Reference Table
| Karat (K) | Purity (%) | Pure Gold per 100g Item (g) |
|---|---|---|
| 24K | 100% | 100 |
| 22K | 91.67% | 91.67 |
| 21K | 87.5% | 87.5 |
| 18K | 75% | 75 |
| 14K | 58.33% | 58.33 |
| 10K | 41.67% | 41.67 |
Example
Suppose you have a gold bangle weighing 75 grams and marked as 22K.
Pure Gold Weight = 75 × (22 / 24)
Pure Gold Weight = 68.75 grams
This means the bangle contains 68.75 grams of pure gold.
Most Common FAQs
Karat (K) measures gold purity, while carat (ct) measures gemstone weight.
Pure gold is soft and bends easily. Alloys with other metals make it stronger and suitable for daily wear.
Yes, you can. As long as you know the weight and purity, the calculator will give accurate results.