Convert Cups to Firkins
Convert Cups (cup) to Firkins (fir) instantly and accurately.
Conversion Formula
fir = cup × 0.006944444444
About Cups
A cup = 8 fl oz = 16 tbsp ≈ 236.6 mL - the fundamental unit of American cooking. Almost every US recipe uses cups for dry and liquid ingredients. The US customary cup (236.588 mL) differs from the US legal cup (240 mL, used in nutrition labelling) and the metric cup (Australia/Canada: 250 mL). Kitchen sets come in 1/4, 1/3, 1/2, and 1 cup sizes. 2 cups = 1 US pint.
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.
Quick Reference Table
| Cups (cup) | Firkins (fir) |
|---|---|
| 1 cup | 0.00694444 fir |
| 2 cup | 0.0138889 fir |
| 5 cup | 0.0347222 fir |
| 10 cup | 0.0694444 fir |
| 25 cup | 0.173611 fir |
| 50 cup | 0.347222 fir |
| 100 cup | 0.694444 fir |