VOLUME CONVERSION
Cubic inch to Imperial gallon.
Convert cubic inch (in³) to imperial gallon (gal (UK)), with the math explained.
1 in³ = 0.00360465015 gal (UK)
US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
THE MATH, MADE SIMPLE
How to convert cubic inch to imperial gallon
Multiply your cubic inch value by 0.00360465014991 to get the equivalent in imperial gallon. Both units are normalized through the liter.
gal (UK) = in³ × 0.0036046501510 in³ = 0.0360465014991 gal (UK)
Result rounded to 12 significant digits. Change the precision in the calculator to suit your task.US and UK gallons, pints, and fluid ounces are different sizes. A metric cup is 250 mL; a US customary cup is 236.5882365 mL.
QUICK REFERENCE
in³ to gal (UK) conversion table
| Cubic inch (in³) | Imperial gallon (gal (UK)) |
|---|---|
| 1 in³ | 0.00360465014991 gal (UK) |
| 2 in³ | 0.00720930029982 gal (UK) |
| 5 in³ | 0.0180232507495 gal (UK) |
| 10 in³ | 0.0360465014991 gal (UK) |
| 20 in³ | 0.0720930029982 gal (UK) |
| 50 in³ | 0.180232507495 gal (UK) |
| 100 in³ | 0.360465014991 gal (UK) |
| 500 in³ | 1.80232507495 gal (UK) |
| 1,000 in³ | 3.60465014991 gal (UK) |
About the cubic inch
The cubic inch (in³) is a unit of volume. One cubic inch equals 0.016387064 liter (base unit) in this calculator.
All cubic inch conversionsAbout the imperial gallon
The imperial gallon (gal (UK)) is a unit of volume. One imperial gallon equals 4.54609 liter (base unit) in this calculator.
All imperial gallon conversionsCommon questions
What is 1 in³ in gal (UK)?
One cubic inch equals 0.00360465014991 gal (UK). Use the formula above for other values.
Why might another calculator show a different last digit?
Calculators may round at different stages or use different unit conventions. We keep full JavaScript numeric precision during calculation and round only for display. Choose up to 15 significant digits. Check US versus UK units and the notes for this category.
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