Karat Calculator
Calculate the purity and gold content of gold items based on karat value. Enter the weight and karat to find the pure gold weight and estimated value.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator determines the purity, pure gold weight, and estimated market value of a gold item based on its karat and total weight.
- Enter Karat: Input the gold purity (e.g., 24, 22, 18, 14, 10). Must be between 0 and 24.
- Enter Total Weight: Input the item's total weight in grams (metric only).
- Enter Gold Price: Input the current gold price per gram in USD.
- Click "Calculate": Press the button to see results.
- Gold Purity: Percentage of pure gold (e.g., 18k = 75%).
- Pure Gold Weight: Weight of pure gold in grams.
- Estimated Value: Pure gold weight × price per gram.
Results:
Formula: Pure Gold = Total Weight × (Karat / 24). Value = Pure Gold × Price per Gram.
Previous Results
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Frequently Asked Questions
Karat (K) measures the purity of gold. 24K is pure gold, 18K is 75% gold, etc.
Multiply total weight by (karat / 24). For example, 10g of 18K gold gives 10 * (18/24) = 7.5g pure gold.
Enter the current market price per gram of 24K gold. You can find it on financial websites.