Convert Imperial gallon (gal UK) (gal_uk) to Cubic inch (in³) (in3)

Category: Volume

277.419433 in3

1 gal_uk = 277.419433 in3

High-precision rounding: 6 decimals


How to convert imperial gallon (gal uk) to cubic inch (in³)

We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.

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Quick conversion table

Handy values for Imperial gallon (gal UK) → Cubic inch (in³). Click a value to open that exact result.

Imperial gallon (gal UK) Cubic inch (in³)
1 277.419433
0.5 138.709716
2.5 693.548582
10 2774.194328

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

  • Imperial gallon (gal UK): The Imperial gallon is exactly 4.54609 L; still used in the UK for beer, milk, and fuel economy.
  • Cubic inch (in³): A cubic inch (in³) is the volume of a cube 1 in per side; known from engine displacement.

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 Imperial gallon (gal UK)

Imperial gallon (UK)

Exactly 4.54609 L. Still appears in UK fuel economy (mpg) and historical tables.

History: Set by the 1824 Weights and Measures Act; differs notably from the US gallon.

About Cubic inch (in³)

Cubic inch (in³)

Volume of a cube 1 in on each side. Classic for engine displacement (e.g., 350 in³) and small components.

History: Automotive culture in the US popularized cubic inches; later often shown alongside liters.

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