Gallons to Cubic Inches
Convert Gallons to Cubic Inches instantly. Free online volume unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Gallons to Cubic Inches conversions.
Reserved above the conversion cards and below the converter.
Formula
in³ = gal × 231
gal = in³ ÷ 231
Conversion table
| 1 gal | 231 in³ |
| 5 gal | 1155 in³ |
| 10 gal | 2310 in³ |
| 20 gal | 4620 in³ |
| 50 gal | 11550 in³ |
| 100 gal | 23100 in³ |
| 500 gal | 115500 in³ |
| 1000 gal | 231000 in³ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many Cubic Inches are in one Gallon?
One Gallon equals 231 in³.
How do I convert Gallons to Cubic Inches?
Multiply the value in Gallons by 231 to get Cubic Inches. Formula: in³ = gal × 231.
Is this Gallons to Cubic Inches conversion exact?
Yes. It is based on internationally recognized unit definitions, so the factor 231 is exact to the precision shown.
When is Gallons to Cubic Inches commonly used?
It is commonly used for fuel, beverages, cooking, water storage, agriculture, laboratories, and everyday industrial liquid measurements.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
The Gallon and the Cubic Inche are both units of volume. The US gallon is a customary unit of liquid volume used mainly in the United States for measuring fuel, water, and beverages. The cubic inch is a small imperial volume unit equal to a cube one inch on each side, often used for engine displacement and small parts. To convert, multiply the Gallons value by 231 (formula: in³ = gal × 231). It is commonly used for fuel, beverages, cooking, water storage, agriculture, laboratories, and everyday industrial liquid measurements. This conversion factor is derived directly from the internationally accepted metric and customary unit definitions, so results are precise and repeatable.