Cubic inches to Gallons (UK) converter

To convert cubic inches to gallons (UK), enter the value in the first field. The result in gallons (UK) is calculated automatically using the exact conversion factor.

1 in³ ≈ 0.00360465014991 UK gal
1 UK gal ≈ 277.419432792 in³

Formula: UK gal ≈ in³ × 0.00360465014991
in³ ≈ UK gal × 277.419432792

Definitions: 1 in³ = 16387.064 mm³; 1 UK gal = 4.54609 L

The cubic inch (in³) is the volume of a cube one inch on each side. It is still used in the United States for engine displacement, especially for classic American cars and motorcycles, and in machining and hydraulic pump specifications.

The imperial (UK) gallon is defined as exactly 4.54609 liters, about 20% larger than the US liquid gallon. It survives in British fuel-economy figures (miles per gallon) and is the base of the imperial system of capacity, in which the pint, quart, peck and bushel are all defined relative to it.

See the conversion table with commonly used values, handy for quick reference or study.