Convert Cubic Feet to Imperial Gallons
Convert Cubic Feet (ft³) to Imperial Gallons (UK gal) instantly and accurately.
Conversion Formula
UK gal = ft³ × 6.228835459
About Cubic Feet
A cubic foot (ft³) is the volume of a cube with sides of one foot (30.48 cm), equal to approximately 28.317 liters. It is widely used in US construction, HVAC engineering, natural gas distribution, and real estate. Natural gas consumption is billed in cubic feet (Ccf = 100 ft³, Mcf = 1,000 ft³); refrigerator, oven, and storage compartment capacity are rated in cubic feet; and concrete or soil orders are quoted in cubic yards or cubic feet. One cubic foot of water weighs approximately 62.4 pounds. Air conditioning units are sized in BTU per hour for room volumes measured in cubic feet.
About Imperial Gallons
A US imperial gallon (UK gal) = exactly 8 imperial pints or 10 lb of pure water at 62°F ≈ 4.546 L - about 20% larger than the US liquid gallon (3.785 L). The weight-based definition made it verifiable with simple scales. Still the legal fuel measure in the Cayman Islands and other British Overseas Territories. UK mpg ratings use imperial gallons: 50 UK mpg ≈ 42 US mpg. 1 UK gal ≈ 4.546 L.
Quick Reference Table
| Cubic Feet (ft³) | Imperial Gallons (UK gal) |
|---|---|
| 1 ft³ | 6.22884 UK gal |
| 2 ft³ | 12.4577 UK gal |
| 5 ft³ | 31.1442 UK gal |
| 10 ft³ | 62.2884 UK gal |
| 25 ft³ | 155.721 UK gal |
| 50 ft³ | 311.442 UK gal |
| 100 ft³ | 622.884 UK gal |