Convert Cubic Millimeter (mm³) to Dram (dr) instantly.
About these units
Cubic Millimeter (mm³)
A cubic millimeter is the volume of a cube exactly 1 millimeter on each side, equal to 10⁻⁹ cubic meters or 0.001 milliliters. It is a very small volume, frequently used in medical imaging, microfluidics, materials science, and cell biology. In anatomy and radiology, tissue or tumor volumes are often quantified in cubic millimeters to express small but clinically significant structures. In engineering, mm³ can describe the displacement of precision components or the volume of micro-machined cavities. Microfluidic research—where entire laboratories are miniaturized onto chips—depends heavily on mm³ and smaller units, as channels and chambers hold extremely tiny volumes. Its precision scale makes it invaluable for applications requiring meticulous material control.
Dram (dr)
The fluid dram is a small historical unit equal to 1/8 of a US fluid ounce or 3.6967 mL (US), with slightly different imperial values. It originated in apothecaries and early pharmaceutical texts, where drams measured potent liquid medicines, tinctures, and extracts. In daily life, drams appeared in old cocktail recipes, medicinal syrups, and household remedies. However, the inconsistency between US and UK drams, along with the rise of the metric system, pushed it out of modern use. Today, the dram survives mostly in whiskey culture—where a "dram" informally means a small pour, not a precise measurement—and in historical studies of medicine.