Gallons (UK) to Cubic decimeters converter

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

1 UK gal = 4.54609 dm³
1 dm³ ≈ 0.219969248299 UK gal

Formula: dm³ = UK gal × 4.54609
UK gal ≈ dm³ × 0.219969248299

Definitions: 1 UK gal = 4.54609 L; 1 dm³ = 0.001 m³

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.

The cubic decimeter (dm³) is the volume of a cube 10 cm on each side and equals exactly one liter. It is the SI-style way of writing liters and is common in technical and engineering contexts, particularly for tank and container volumes.

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