Fluid drachms/drams (imperial) to drops (medical)

This free conversion calculator will convert fluid drachms/drams (imperial) to drops (medical), i.e. fl dr (imp) to gtt (medical). Correct conversion between different measurement scales.

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The formula is $$$V_{\text{gtt (medical)}} = \frac{1363827}{32000} V_{\text{fl dr (imp)}}$$$, where $$$V_{\text{fl dr (imp)}} = 15$$$.

Therefore, $$$V_{\text{gtt (medical)}} = \frac{4091481}{6400}$$$.

Answer: $$$15 \text{fl dr (imp)} = \frac{4091481}{6400} \text{gtt (medical)} = 639.29390625 \text{gtt (medical)}.$$$