Convert Cubic Inches to Firkins
Convert Cubic Inches (in³) to Firkins (fir) instantly and accurately.
Conversion Formula
fir = in³ × 0.000481000481
About Cubic Inches
A cubic inch (in³) is the volume of a cube with sides of one inch (25.4 mm), equal to approximately 16.387 mL. It is widely used in US engineering and manufacturing - engine displacement was traditionally described in cubic inches (a 350 in³ V8 engine displaces 5.7 liters), and product specifications for items sold in the US frequently reference cubic inches. Speaker cabinet volumes, wine bottle capacities in older US standards, refrigerator compartment sizes, and box shipping calculations in imperial units all use cubic inches. One liter equals approximately 61.024 cubic inches.
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
| Cubic Inches (in³) | Firkins (fir) |
|---|---|
| 1 in³ | 0.000481 fir |
| 2 in³ | 0.000962001 fir |
| 5 in³ | 0.002405 fir |
| 10 in³ | 0.00481 fir |
| 25 in³ | 0.012025 fir |
| 50 in³ | 0.02405 fir |
| 100 in³ | 0.0481 fir |