US Gallons to Cubic Inches (gal to in³) Converter
1 US gallon (gal) = 231 cubic inches (in³). To convert US gallons to cubic inches, multiply by 231: 15 gal × 231 = 3,465 in³.
Quick facts
- 1 gal = 231 in³
- 1 in³ = 0.004329 gal
- Formula: in³ = gal × 231
- Quick estimate: multiply by about 231
How to convert US gallons to cubic inches
- Take the value in US gallons.
- Multiply it by 231 (the number of cubic inches in one US gallon).
- Round the result to the precision you need.
Worked example (a car fuel tank): 15 gal × 231 = 3465 in³.
To convert cubic inches back to US gallons, multiply by 0.004329, or divide by 231.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
US Gallons to Cubic Inches conversion table
| US Gallons [gal] | Cubic Inches [in³] |
|---|---|
| 0.01 gal | 2.31 in³ |
| 0.1 gal | 23.1 in³ |
| 1 gal | 231 in³ |
| 2 gal | 462 in³ |
| 3 gal | 693 in³ |
| 5 gal | 1155 in³ |
| 10 gal | 2310 in³ |
| 20 gal | 4620 in³ |
| 50 gal | 11550 in³ |
| 100 gal | 23100 in³ |
| 1000 gal | 231000 in³ |
gal to in³ chart from 1 to 100
- 1 gal 231 in³
- 2 gal 462 in³
- 3 gal 693 in³
- 4 gal 924 in³
- 5 gal 1155 in³
- 6 gal 1386 in³
- 7 gal 1617 in³
- 8 gal 1848 in³
- 9 gal 2079 in³
- 10 gal 2310 in³
- 11 gal 2541 in³
- 12 gal 2772 in³
- 13 gal 3003 in³
- 14 gal 3234 in³
- 15 gal 3465 in³
- 16 gal 3696 in³
- 17 gal 3927 in³
- 18 gal 4158 in³
- 19 gal 4389 in³
- 20 gal 4620 in³
- 25 gal 5775 in³
- 30 gal 6930 in³
- 35 gal 8085 in³
- 40 gal 9240 in³
- 45 gal 10395 in³
- 50 gal 11550 in³
- 55 gal 12705 in³
- 60 gal 13860 in³
- 65 gal 15015 in³
- 70 gal 16170 in³
- 75 gal 17325 in³
- 80 gal 18480 in³
- 85 gal 19635 in³
- 90 gal 20790 in³
- 95 gal 21945 in³
- 100 gal 23100 in³
Cubic Inches to US Gallons conversion table
| Cubic Inches [in³] | US Gallons [gal] |
|---|---|
| 0.01 in³ | 0.00004329 gal |
| 0.1 in³ | 0.0004329004 gal |
| 1 in³ | 0.0043290043 gal |
| 2 in³ | 0.0086580087 gal |
| 3 in³ | 0.012987013 gal |
| 5 in³ | 0.0216450216 gal |
| 10 in³ | 0.0432900433 gal |
| 20 in³ | 0.0865800866 gal |
| 50 in³ | 0.2164502165 gal |
| 100 in³ | 0.4329004329 gal |
| 1000 in³ | 4.329004329 gal |
US Gallons vs Cubic Inches
| US Gallon | Cubic Inch | |
|---|---|---|
| Symbol | gal | in³ |
| Equals | 1 gal = 231 in³ | 1 in³ = 0.004329 gal |
What is a US gallon?
A US customary unit equal to 4 quarts. Used in the US for fuel, milk, and paint.
What is a cubic inch?
The volume of a cube with 1-inch sides. Used in the US for small mechanical parts and engine displacement.
Frequently asked questions
How many cubic inches are in a US gallon?
There are 231 cubic inches in 1 US gallon (1 gal = 231 in³).
How many US gallons are in a cubic inch?
There are 0.004329 US gallons in 1 cubic inch (1 in³ = 0.0043290043 gal).
How do I convert US gallons to cubic inches?
Multiply the number of US gallons by 231. For example, 10 gal × 231 = 2,310 in³. To convert back, multiply by 0.004329.
What is 10 gal in cubic inches?
10 gal = 2,310 in³.
What is 100 gal in cubic inches?
100 gal = 23,100 in³.
Is the conversion exact?
Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.
Related conversions
Popular volume conversions
- Liters to US Gallons
- US Gallons to Liters
- Milliliters to US Cups
- US Cups to Milliliters
- US Tablespoons to Milliliters
- US Teaspoons to Milliliters
- Milliliters to US Fluid Ounces
- US Fluid Ounces to Milliliters
- Liters to Milliliters
- Cubic Meters to Liters
- Liters to US Cups
- US Quarts to Liters
Convert US gallons to other units
- US Gallons to Milliliters
- US Gallons to Liters
- US Gallons to Cubic Meters
- US Gallons to US Teaspoons
- US Gallons to US Tablespoons
- US Gallons to US Fluid Ounces
- US Gallons to US Cups
- US Gallons to US Pints
- US Gallons to US Quarts
- US Gallons to Cubic Feet
Convert other units to cubic inches
- Milliliters to Cubic Inches
- Liters to Cubic Inches
- Cubic Meters to Cubic Inches
- US Teaspoons to Cubic Inches
- US Tablespoons to Cubic Inches
- US Fluid Ounces to Cubic Inches
- US Cups to Cubic Inches
- US Pints to Cubic Inches
- US Quarts to Cubic Inches
- Cubic Feet to Cubic Inches
Open the full volume converter with every unit →