This converter allows you to quickly convert us gallons (gal)
into cubic inches (in³).
Simply enter a value, choose your units, and get an instant, accurate result.
US Gallon to Cubic Inch Conversion Table
US Gallon (gal)
Cubic Inch (in³)
1
231
2
462
5
1,155
10
2,310
20
4,620
50
11,550
100
23,100
200
46,200
500
115,500
1000
231,000
2000
462,000
5000
1,155,000
10000
2,310,000
20000
4,620,000
50000
11,550,000
100000
23,100,000
200000
46,200,000
500000
115,500,000
1000000
231,000,000
2000000
462,000,000
How to convert US Gallons to Cubic Inches?
To convert us gallons to cubic inches, multiply by the conversion factor:
Example: Convert 10 US Gallons to Cubic Inches
Frequently asked questions
How many cubic inches are in 1 us gallon?
1 US Gallon (gal) equals 231 cubic inches (in³).
How many us gallons are in 1 cubic inch?
1 Cubic Inch (in³) equals 0.004329 us gallons (gal).
How do I convert cubic inches back to us gallons?
Use the swap button above to flip the converter, or type a value directly into the "Cubic Inch" field — this page converts in both directions instantly as you type, with no submit button needed.
Which is larger, us gallon or cubic inch?
1 US Gallon is larger — it takes 231 cubic inches to equal 1 us gallon.