VOLUME CONVERSION
Cubic inch to US gallon.
Convert cubic inch (in³) to us gallon (gal (US)), with the math explained.
1 in³ = 0.004329004329 gal (US)
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 us gallon
Multiply your cubic inch value by 0.004329004329 to get the equivalent in us gallon. Both units are normalized through the liter.
gal (US) = in³ × 0.00432900432910 in³ = 0.04329004329 gal (US)
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 (US) conversion table
| Cubic inch (in³) | US gallon (gal (US)) |
|---|---|
| 1 in³ | 0.004329004329 gal (US) |
| 2 in³ | 0.00865800865801 gal (US) |
| 5 in³ | 0.021645021645 gal (US) |
| 10 in³ | 0.04329004329 gal (US) |
| 20 in³ | 0.0865800865801 gal (US) |
| 50 in³ | 0.21645021645 gal (US) |
| 100 in³ | 0.4329004329 gal (US) |
| 500 in³ | 2.1645021645 gal (US) |
| 1,000 in³ | 4.329004329 gal (US) |
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 us gallon
The us gallon (gal (US)) is a unit of volume. One us gallon equals 3.785411784 liter (base unit) in this calculator.
All us gallon conversionsCommon questions
What is 1 in³ in gal (US)?
One cubic inch equals 0.004329004329 gal (US). 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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