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Convert US Gallon to Cubic Inch

1 us gallon = 231 cubic inches (gal to in³).

The us gallon (gal) and the cubic inch (in³) both measure volume. A us gallon is larger than a cubic inch — one us gallon contains 231 cubic inches. Going the other way, one cubic inch is 0.004329 us gallons. The converter above does this in real time, and the reference chart lists the values that come up most often.

231

1 gal = 231 in³

How to convert US Gallons to Cubic Inches

Multiply the us gallon value by 231 to get cubic inches.

Example: 10 us gallons = 2,310 cubic inches.

US Gallon to Cubic Inch Conversion Chart

US GallonsCubic Inches
1 gal231 in³
2 gal462 in³
3 gal693 in³
5 gal1,155 in³
10 gal2,310 in³
20 gal4,620 in³
25 gal5,775 in³
50 gal11,550 in³
100 gal23,100 in³
1000 gal231,000 in³

Frequently Asked Questions

How many cubic inches are in a us gallon?
There are 231 cubic inches in 1 us gallon.
How do you convert us gallons to cubic inches?
Multiply the us gallon value by 231 to get cubic inches.
What is 5 us gallons in cubic inches?
5 us gallons equals 1,155 cubic inches.
What is 100 us gallons in cubic inches?
100 us gallons equals 23,100 cubic inches.
What is 1 cubic inch in us gallons?
1 cubic inch equals 0.0043290043 us gallons.
Is this us gallon to cubic inch converter free?
Yes. The converter is free, needs no sign-up, and runs entirely in your browser — the values you enter never leave your device.

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