Dram (apothecary; troy) is mass unit, symbol: [dr t]. Definition of 1 dram (apothecary; troy) ≡ 60 gr . The dram (alternative British spelling drachm) was originally both a coin and a weight in ancient Greece. = 60 grain = 3.8879346 g. Compared to kilogram, dram (apothecary; troy) is smaller unit.
• 1 [dr t] = (exactly) `0.0038879346` [kg]
• 1 [kg] = (exactly) `1/(0.0038879346)` [dr t] = 257.20597254902 [dr t]
Multiply convert of dram (apothecary; troy) to common mass units:[dr t]
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National Institute of Standards and Technology (October 2011). Butcher, Tina; Cook, Steve; Crown, Linda et al. eds. Appendix C – General Tables of Units of Measurement (PDF) p. C-6. http://www.nist.gov/pml/wmd/pu...