Instant, two-way conversion across common engineering units.
1 ft³ = 6.2288355 imp gal(Cubic foot → Imperial gallon)
To convert cubic feet to imperial gallons, multiply the value by 6.2288355. Volume conversions matter for concrete pours, excavation, tank capacity and airflow, where a rounding slip becomes a delivery error.
The cubic foot (ft³) is the standard imperial unit for bulk volume and airflow.
The imperial gallon is the UK liquid volume unit and is about 20 percent larger than the US gallon.
1 ft³ equals 6.2288355 imp gal.
Multiply the value by 6.2288355. For example, 10 ft³ equals 62.288355 imp gal.
1 imp gal equals 0.16054365 ft³. The converter above works in both directions, so you can type into either field.
The US gallon comes from the old English wine gallon of 231 cubic inches, while the imperial gallon was redefined in 1824. The imperial gallon is about 20 percent larger.
Cubic meters are the standard ordering unit for concrete and excavation in metric practice; cubic yards serve the same role in the US.
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