Convert Gallons to Cubic Inches
Convert Gallons (gal) to Cubic Inches (in³) instantly and accurately.
Conversion Formula
in³ = gal × 231
About Gallons
A US gallon (gal) = 4 quarts = 128 fl oz ≈ 3.785 L. Gasoline, milk, water, paint, and pesticides are sold by the gallon in the US. About 20% smaller than the UK imperial gallon (4.546 L) - a critical difference when comparing fuel economy across the Atlantic. 1 US gal = 3.785 L = 4 qt = 128 fl oz.
About Cubic Inches
A cubic inch (in³) is the volume of a cube with sides of one inch (25.4 mm), equal to approximately 16.387 mL. It is widely used in US engineering and manufacturing - engine displacement was traditionally described in cubic inches (a 350 in³ V8 engine displaces 5.7 liters), and product specifications for items sold in the US frequently reference cubic inches. Speaker cabinet volumes, wine bottle capacities in older US standards, refrigerator compartment sizes, and box shipping calculations in imperial units all use cubic inches. One liter equals approximately 61.024 cubic inches.
Quick Reference Table
| Gallons (gal) | Cubic Inches (in³) |
|---|---|
| 1 gal | 231 in³ |
| 2 gal | 462 in³ |
| 5 gal | 1155 in³ |
| 10 gal | 2310 in³ |
| 25 gal | 5775 in³ |
| 50 gal | 11550 in³ |
| 100 gal | 23100 in³ |