Convert Firkins to Tuns
Convert Firkins (fir) to Tuns (tun) instantly and accurately.
Conversion Formula
tun = fir × 0.03571428571
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 Tuns
A tun = 4 hogsheads = 252 US gallons ≈ 953.9 L - the largest traditional wine cask and origin of the English word 'ton': a full tun of wine weighed ~1 long ton. English shipping law rated cargo capacity in 'tuns burden'. Scottish distilleries use 'tun rooms' for large vatting/blending vats. 1 tun = 252 US gal = 2 pipes = 4 hogsheads ≈ 953.9 L.
Quick Reference Table
| Firkins (fir) | Tuns (tun) |
|---|---|
| 1 fir | 0.0357143 tun |
| 2 fir | 0.0714286 tun |
| 5 fir | 0.178571 tun |
| 10 fir | 0.357143 tun |
| 25 fir | 0.892857 tun |
| 50 fir | 1.78571 tun |
| 100 fir | 3.57143 tun |