Convert Cubic foot (ft³) (ft3) to US gallon (gal) (gal)
Category: Volume
1 ft3 = 7.480519 gal
High-precision rounding: 6 decimals
How to convert cubic foot (ft³) to us gallon (gal)
We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.
Share this conversion: /convert/cubic-foot-to-us-gallon/1
Quick conversion table
Handy values for Cubic foot (ft³) → US gallon (gal). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Mixing US gallons (3.785 L) with Imperial gallons (4.546 L).
- Assuming kitchen ‘cup’ equals the same volume in every country.
Unit facts
- Cubic foot (ft³): A cubic foot (ft³) is the volume of a cube 1 ft per side; common in construction/HVAC.
- US gallon (gal): The US gallon is exactly 3.785411784 L; used for fuel, beverages, and bulk liquids.
About Volume
Volume measures the space a substance occupies. SI uses cubic meters and liters; customary units like gallons, quarts, and pints persist in recipes, fuel, and containers. Accurate volume work often requires temperature and density considerations (e.g., for fuels).
About Cubic foot (ft³)
Cubic foot (ft³)
Volume of a cube 1 ft on each side. Common in HVAC, refrigerators, and construction aggregates (yards/feet systems).
History: Persisted with imperial building practices; tied to the 1959 definition of the foot.
About US gallon (gal)
US gallon (gal)
Exactly 3.785411784 L. Used for fuel, containers, and recipes in the US. Beware of imperial gallon differences.
History: US defined the gallon separately from the British imperial revision; modern value is exact.