Convert long tons to carats for jewelry appraisal, gemstone trading, and precious metal commerce. 1 long ton = 10,160,469 carats. Accurate calculator with professional examples.
1 long ton equals 5080232.105644443 carat
Formula: ct = long tn × 5.08023e+6
The long ton, primarily used in the United Kingdom and Commonwealth nations, represents 2,240 pounds or approximately 1,016.047 kilograms. The carat, a unit fundamental to the gemstone and precious metal industries worldwide, equals exactly 200 milligrams. With 1 long ton equaling precisely 10,160,469 carats, accurate conversion is essential for international jewelry commerce, precious metal trading, and gemological assessment where even small measurement errors can result in significant financial discrepancies.
Precision in converting long tons to carats is critical in high-value transactions involving diamonds, gemstones, and precious metals. A single carat difference in a diamond assessment can mean thousands of dollars in valuation error. Industries relying on these conversions—jewelry manufacturing, gemstone trading, and precious metal refineries—depend on exact measurements to ensure fair pricing, regulatory compliance, and customer satisfaction. Incorrect conversions can result in financial losses, legal disputes, and damaged professional reputation.
Precious metal refineries and trading houses process large quantities of gold, silver, and platinum from various sources including recycled materials, mining operations, and industrial waste. When receiving shipments measured in long tons from UK or Commonwealth suppliers, these facilities must convert to carats for precise inventory management, quality assurance testing, and customer invoicing. Accuracy at this scale is paramount because a 0.1% error on a 5 long ton shipment represents over 50,000 carats of unaccounted precious metal, potentially worth hundreds of thousands of dollars.
International gemstone dealers and jewelry manufacturers frequently encounter shipments from UK-based suppliers measured in long tons, particularly for bulk rough diamonds, colored gemstones, and semi-precious materials. Converting these large shipments to carats enables accurate inventory tracking, quality grading, and wholesale pricing calculations. The gemstone industry relies on carat weight as the fundamental measurement unit for pricing, with price per carat varying dramatically based on quality, origin, and type. Large-scale conversions must be performed with absolute precision to maintain profit margins and customer trust.
| long tons | carats |
|---|---|
| 1 LT | 5080232.105644 ct |
| 2 LT | 10160464.211289 ct |
| 5 LT | 25401160.528222 ct |
| 10 LT | 50802321.056444 ct |
| 20 LT | 101604642.112889 ct |
Formula: ct = LT × conversion factor
The long ton is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
The carat is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
This long ton to carat converter uses high-precision conversion factors to ensure accurate results for professional and academic use.
Our calculator provides results with up to 10 decimal places for maximum accuracy.
Exactly 10,160,469 carats. This precise figure is derived from the definition that 1 long ton = 2,240 pounds avoirdupois = 1,016,046.9088 kilograms, and 1 carat = exactly 200 milligrams. Therefore: 1,016,046.9088 kg ÷ 0.0002 kg per carat = 10,160,469 carats. This precise conversion factor is essential for professional gemstone trading, precious metal refining, and international commerce where financial accuracy is non-negotiable.
Gemstone and precious metal traders encounter long tons primarily when receiving bulk shipments from UK or Commonwealth suppliers, in historical inventory records, or when purchasing materials from maritime shipping documents that use long tons as the standard measurement. Additionally, industrial sources of precious metals—such as recycled electronics processing facilities or mining operations in Commonwealth nations—often provide shipping weights in long tons. Converting these bulk quantities to carats allows traders to accurately assess inventory value, calculate per-carat pricing, and maintain consistent records across their supply chain regardless of the original measurement unit used by suppliers.
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