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Carat to Ratti Calculator
Accurately convert gemstone weights between Carat, Ratti, Gram and Milligram — trusted by gem buyers and sellers across India
Quick Reference Guide
What is Carat & Ratti?
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What is Carat?
Carat is the internationally recognized standard unit of weight for gemstones and pearls. 1 Carat equals exactly 200 milligrams. The term originates from the carob seeds historically used as counterweights in gem trading.
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What is Ratti?
Ratti is the traditional Indian unit of gemstone weight, equal to approximately 182 milligrams. It has been used in Ayurveda and Vedic astrology for centuries, and remains the preferred measurement unit for gemstone recommendations by Indian astrologers.
💡 Tip: When an astrologer recommends a gemstone weight in Ratti, use this calculator to find the exact Carat weight before purchasing.