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Gallons (US) to Cubic inches Converter

Quick answer: 1 gal = 231 in³. To convert gallons (US) to cubic inches, multiply by 231.

gal
in³

Cubic inches = Gallons (US) × 231

Swap: Cubic inches to Gallons (US)

Gallons (US) to Cubic inches conversion table

Gallons (US)Cubic inches
1 gal231 in³
2 gal462 in³
5 gal1,155 in³
10 gal2,310 in³
25 gal5,775 in³
50 gal11,550 in³
100 gal23,100 in³

How to convert gallons (US) to cubic inches

Cubic inches = Gallons (US) × 231. For example, 2 gal = 462 in³. Type a value in either box above: the other one updates instantly, both ways.

What is a gallon?

A US gallon (gal) is 128 US fluid ounces, exactly 3.785411784 liters.

What is a cubic inch?

A cubic inch (in³) is the volume of a 1 in cube, about 16.39 mL; engine sizes are often given in it.

How do I convert gallons (US) to cubic inches?

Use the formula Cubic inches = Gallons (US) × 231. Type a value in the gallons (US) box and the result appears instantly.

How many cubic inches are in 1 gallon?

1 gal = 231 in³.

Is this converter free and private?

Yes. It is free, needs no sign-up, and the calculation runs in your browser: nothing is sent to a server.

Which cups, pints and gallons does this use?

US customary units: 1 cup = 236.588 mL, 1 US gallon = 3.785 L and 1 US fluid ounce = 29.574 mL. The imperial (UK) gallon is larger, 4.546 L, and has its own converter.