Gallons to Cubic inches Converter

1 gallon (gal) equals 231 cubic inches (in³).

Quick answer

  • 1 gallon = 231 cubic inches
  • 1 cubic inch = 0.004329004329 gallons
  • Formula: in³ = gal × 231

1 gallon = 231 cubic inches

How to convert gallons to cubic inches

in³ = gal × 231

To convert gallons to cubic inches, multiply the number of gallons by 231.

Example: 18 gal to in³

  1. Start with the value in gallons: 18 gal.
  2. Multiply by 231: 18 × 231 = 4,158.
  3. Result: 18 gallons = 4,158 cubic inches.

Going the other way, 1 cubic inch = 0.004329004329 gallons, so to convert cubic inches back to gallons you divide by the same number. See cubic inches to gallons.

Gallons to cubic inches conversion table

Gallons (gal)Cubic inches (in³)
0.25 gal 57.75 in³
0.5 gal 115.5 in³
0.75 gal 173.25 in³
1 gal 231 in³
1.5 gal 346.5 in³
2 gal 462 in³
2.5 gal 577.5 in³
3 gal 693 in³
4 gal 924 in³
5 gal 1,155 in³
6 gal 1,386 in³
7 gal 1,617 in³
8 gal 1,848 in³
9 gal 2,079 in³
10 gal 2,310 in³
11 gal 2,541 in³
12 gal 2,772 in³
13 gal 3,003 in³
14 gal 3,234 in³
15 gal 3,465 in³
16 gal 3,696 in³
17 gal 3,927 in³
18 gal 4,158 in³
19 gal 4,389 in³
20 gal 4,620 in³
21 gal 4,851 in³
22 gal 5,082 in³
23 gal 5,313 in³
24 gal 5,544 in³
25 gal 5,775 in³
26 gal 6,006 in³
27 gal 6,237 in³
28 gal 6,468 in³
29 gal 6,699 in³
30 gal 6,930 in³
31 gal 7,161 in³
32 gal 7,392 in³
33 gal 7,623 in³
34 gal 7,854 in³
35 gal 8,085 in³

More gal to in³ values

What is a gallon?

The US gallon is the unit used in the United States for gasoline, milk and other liquids.

More about gallons →

What is a cubic inch?

The cubic inch is the volume of a cube one inch on each side, about 16.39 mL.

More about cubic inches →

Convert gallons to other units

Convert other units to cubic inches

Frequently asked questions

How many cubic inches are in a gallon?

One gallon is 231 cubic inches.

How many gallons are in a cubic inch?

One cubic inch is 0.004329004329 gallons.

What is the formula to convert gallons to cubic inches?

in³ = gal × 231.