Convert Firkins to Fluid Drams

Convert Firkins (fir) to Fluid Drams (fl dr) instantly and accurately.

Firkins (fir)
Fluid Drams (fl dr)

Conversion Formula

fl dr = fir × 9216

About Firkins

A firkin (fir) ≈ 34.07 L (9 US gallons) - the most common cask for British real-ale delivery (9 imperial gallons = 40.91 L). A busy pub cellar cycles through several firkins per week. Craft breweries stage 'firkin tappings' of limited experimental ales. The name comes from Middle Dutch 'vierdekijn' (little fourth), as a firkin was one quarter of a barrel. 1 fir = 9 US gal ≈ 34.07 L.

About Fluid Drams

A fluid dram (fl dr, also 'drachm') = 1/8 fl oz ≈ 3.697 mL. Used by apothecaries for precise medicinal compounding; a fluid dram divided into 60 minims. Largely superseded by millilitres but still appears in traditional compounding recipes, older US pharmacopeias, and historical medical literature. 1 fl dr ≈ 3.697 mL.

Quick Reference Table

Firkins (fir)Fluid Drams (fl dr)
1 fir9216 fl dr
2 fir18432 fl dr
5 fir46080 fl dr
10 fir92160 fl dr
25 fir230400 fl dr
50 fir460800 fl dr
100 fir921600 fl dr

→ Full Volume Converter