Fluid drams (US) to Fluid drams (UK) converter

To convert fluid drams (US) to fluid drams (UK), enter the value in the first field. The result in fluid drams (UK) is calculated automatically using the exact conversion factor.

1 US fl dr ≈ 1.04084273079 UK fl dr
1 UK fl dr ≈ 0.960759940404 US fl dr

Formula: UK fl dr ≈ US fl dr × 1.04084273079
US fl dr ≈ UK fl dr × 0.960759940404

Definitions: 1 US fl dr = 1/8 US fl oz; 1 UK fl dr = 1/8 UK fl oz

The US fluid dram (also written fluidram) is 1/8 of a US fluid ounce, about 3.7 mL. It comes from the apothecaries' system of medicine measures and is now rare, found mostly in older pharmacy references.

The imperial fluid drachm, usually called a fluid dram, is 1/8 of an imperial fluid ounce, about 3.55 mL. It belongs to the old British apothecaries' system that metric doses have replaced.

See the conversion table with commonly used values, handy for quick reference or study.