Karat Calculator
Gold Karat Converter
Convert gold purity between any two karats. Enter your weight and karat, get the equivalent in any other karat with today's live gold price.
💎 Gold Karat Converter
- Weight in target karat
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- Pure gold content
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- Converted gold value
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Frequently Asked Questions
How do I convert 22K gold to 18K?+
Multiply the 22K weight by (22÷24) to get pure gold, then divide by (18÷24). Example: 10g of 22K = 10 × 0.9167 = 9.167g pure gold → 9.167 ÷ 0.75 = 12.22g of 18K alloy. Use the calculator above for instant results.
How much of a 22K gold item is pure gold?+
22K gold is 91.67% pure (= 22 ÷ 24). So 10g of 22K contains 9.167g of pure gold.
What karat is most common for jewellery?+
22K is most common in India and the Middle East. 18K is preferred in Europe and the US. 21K is popular in Arab countries. 14K dominates the American retail market.
How is karat different from carat?+
"Karat" (K) measures gold purity (24K = pure gold). "Carat" (ct) measures gemstone weight (1 carat = 0.2 grams). They are completely different units — not interchangeable.
Can I convert any karat to any other?+
Yes. The formula is: target_weight = original_weight × (original_karat ÷ target_karat). The converter above handles all combinations from 24K to 9K.