# Pennyweights to Centigrams (dwt to cg) Source: https://www.unitconvertercalculator.com/weight/pennyweights-to-centigrams/ **1 dwt = 155.517384 cg** One pennyweight equals approximately 155.517 centigrams. This conversion connects the troy weight system's pennyweight, used in precious metals trading, with the metric system's centigram, a unit historically favored in European pharmaceutical compounding. Both units occupy a niche space between everyday measurements and highly specialized applications. ## Formula Apply the conversion factor ## Conversion Table | Pennyweights (dwt) | Centigrams (cg) | |---|---| | 0.1 dwt | 15.5517384 cg | | 0.5 dwt | 77.758692 cg | | 1 dwt | 155.517384 cg | | 5 dwt | 777.58692 cg | | 10 dwt | 1555.17384 cg | | 20 dwt | 3110.34768 cg | | 50 dwt | 7775.8692 cg | | 100 dwt | 15551.7384 cg | | 200 dwt | 31103.4768 cg | | 240 dwt | 37324.17216 cg | | 500 dwt | 77758.692 cg | | 1000 dwt | 155517.384 cg | ## Units ### Pennyweight (dwt) A pennyweight is a unit of mass equal to 24 grains or 1/20 of a troy ounce (1.55517384 grams). Used in the jewelry trade for weighing precious metals. ### Centigram (cg) A centigram is one hundredth of a gram. It is a metric unit rarely used in everyday life but appears in some scientific and educational contexts. ## Background Antique apothecary ledgers from the 18th and 19th centuries occasionally record precious metal ingredients for medicinal preparations in pennyweights alongside pharmaceutical compounds measured in centigrams. Researchers transcribing these historical documents need to understand both units. Modern analytical laboratories rarely use centigrams, but the conversion remains relevant when studying historical recipes that blended metallic compounds with pharmaceutical bases. ## Good to Know The pennyweight and centigram represent two fundamentally different approaches to measurement. The pennyweight grew organically from medieval commerce, its size determined by the weight of a silver coin. The centigram was deliberately engineered during the French Revolution as part of a rational, decimal-based system. Their coexistence in historical pharmacy records marks the transition point between these two philosophies. ## FAQ ### How many centigrams are in one pennyweight? One pennyweight equals approximately 155.517 centigrams. This is derived from the pennyweight's mass of 1.55517 grams, multiplied by 100 to convert grams to centigrams. ### When would someone need to convert pennyweights to centigrams? This conversion is primarily relevant for historical research into old pharmacy and alchemy records, where precious metals and pharmaceutical ingredients were measured in different weight systems. Historians, antique document translators, and museum curators working with period apothecary equipment may encounter both units. ### How do I perform this conversion? Multiply the number of pennyweights by 155.517 to get centigrams. For example, 5 pennyweights equals approximately 777.6 centigrams. Alternatively, multiply pennyweights by 1.55517 to get grams, then multiply by 100 for centigrams. ## Non-Frequently Asked Questions ### Were alchemists the only people who needed both pennyweights and centigrams? Alchemists certainly would have appreciated both units, given their habit of combining gold with obscure pharmaceutical compounds. However, they predated the centigram by several centuries. The real overlap occurred in 19th-century pharmacies that stocked both precious metals (for dental fillings and medicinal compounds) and metric-measured drugs. ### Is the pennyweight-to-centigram conversion the most obscure conversion on this website? It is a strong contender. The intersection of medieval English coin weight with French Revolutionary pharmaceutical measurement produces a conversion that approximately zero people perform daily. Yet it exists, documented and precise, ready for the one historian who needs it at 2 AM while transcribing a Georgian apothecary's notebook. ### If I measured my patience in pennyweights and my frustration in centigrams, which would run out first? At 155.517 centigrams per pennyweight, your frustration outnumbers your patience by roughly 155 to 1 in unit count alone. Whether this reflects the actual ratio of frustration to patience in your life depends on factors beyond the scope of weight conversion, though the mathematics are not encouraging. ## Related Articles - [Why We Measure: The Deepest Urge in Human Civilisation](https://www.unitconvertercalculator.com/blog/why-we-measure) - [The Map Is Not the Territory: Why Every Measurement Is Wrong](https://www.unitconvertercalculator.com/blog/the-map-is-not-the-territory) - [Zero: The Most Dangerous Number in Measurement](https://www.unitconvertercalculator.com/blog/zero-the-most-dangerous-number-in-measurement) - [The Kilogram Problem: The Object That Was Its Own Definition](https://www.unitconvertercalculator.com/blog/the-kilogram-problem) - [The Body as a Ruler: Every Measurement Unit That Came From Us](https://www.unitconvertercalculator.com/blog/the-body-as-a-ruler) - [Why Your Recipe Is Lying to You: The Chaos of Cooking Measurements](https://www.unitconvertercalculator.com/blog/why-recipe-measurements-are-unreliable) - [15 Obscure Measurement Units You've Never Heard Of (But Still Need)](https://www.unitconvertercalculator.com/blog/obscure-measurement-units-guide) - [When Measurements Go Wrong - Disasters, Blunders and Happy Accidents](https://www.unitconvertercalculator.com/blog/when-measurements-go-wrong) - [The Surprising Stories Behind Everyday Units of Measurement](https://www.unitconvertercalculator.com/blog/stories-behind-measurement-units) - [Metric vs. Imperial - The Complete Guide to the World's Two Measurement Systems](https://www.unitconvertercalculator.com/blog/metric-vs-imperial-complete-guide) - [Understanding Weight Units - Kilograms, Pounds, Stones & Ounces](https://www.unitconvertercalculator.com/blog/understanding-weight-units) - [Complete Baking Measurement Guide - Cups, Grams, Ounces](https://www.unitconvertercalculator.com/blog/baking-measurement-guide) ## See Also - [Centigrams to Pennyweights](https://www.unitconvertercalculator.com/weight/centigrams-to-pennyweights/)