1 dram

Hi, does anybody know how many fluid ounces there are in 1 dram? :oops:

Hi, does anybody know how many fluid ounces there are in 1 dram? :oops:

fluid dram or fluidram (fl dr)
a unit of volume in the traditional apothecary system, equal to 1/8 fluid ounce. This unit is usually called the fluid dram or fluidram to avoid confusion with the weight dram. The U. S. fluid dram contains about 0.225 586 cubic inches or 3.696 691 milliliters. In the British Imperial system, the fluid dram is about 0.216 734 cubic inches or 3.551 633 milliliters.


There are also two weight units of the same name in the avoirdupois and apothecary weight systems.

Thank you for replying - just so I understand 1 dram = 1/8 fluid ounce, it also = 3.696 691 mls US or 3.551 633 mls imperial.

Needed the info for measuring perfume oils.

Thank you for replying - just so I understand 1 dram = 1/8 fluid ounce,

True.

it also = 3.696 691 mls US or 3.551 633 mls imperial.

Be careful. A milliliter is the same everywhere, US and UK drams (and fluid ounces and gallons) are different sizes.
US fluid dram = 3.7 mL
Imperial fluid dram = 3.55 mL.

Why not just use milliliters. Nobody knows what a dram is anymore (and I doubt it is legal for trade in the US - check FPLA and supporting FDA rules, or UPLR for legal "net contents" units)