Need to check the purity of your gold? Use our free Gold Karat Calculator to instantly determine karat, purity percentage, and estimated value. Simply weigh your gold in air and water to get accurate results — perfect for jewelry, coins, and gold bars. Trusted by jewelers, gold buyers, and investors worldwide.
Gold Karat Calculator Pro
Professional density-based gold purity analysis with 23+ international standards
v3.5.2 🌍 23 Standards 🎯 4-Decimal PrecisionThis is the ultimate free gold karat calculator software — combining density-based karat testing, fake gold detection, purity percentage calculation, and estimated value in one tool. The software uses the scientific water displacement method to measure gold density and matches it against 23 international gold standards (24K, 22K, 18K, 14K, 10K, 9K). Whether you’re a jewelry professional, gold investor, or first-time buyer, get lab-grade results instantly — completely free, with no software to download or install.