Definition: A US gallon is a unit of volume equal to 231 cubic inches, or about 3.785 liters.
History/origin: The gallon originated in England as a system of measuring wine and beer. The US adopted its own version based on the wine gallon.
Current use: The US gallon is used primarily in the United States to measure liquid volumes like fuel, milk, and other beverages.
Definition: A cubic inch (in³) is a unit of volume that corresponds to the volume of a cube with each side measuring one inch.
History/origin: The cubic inch is part of the imperial and US customary systems and has historically been used in engineering and automotive fields.
Current use: Cubic inches are used primarily in the United States, especially for measuring engine displacement in automobiles and motorcycles.
| Gallons [US gal] | Cubic Inches [in³] |
|---|---|
| 1.00 | 231.00 |
| 0.50 | 115.50 |
| 0.25 | 57.75 |
| 2.00 | 462.00 |
| 5.00 | 1155.00 |
| 10.00 | 2310.00 |
| 0.10 | 23.10 |
| 0.01 | 2.31 |
| 3.00 | 693.00 |
| 7.50 | 1732.50 |
1 gallon (US) = 231 cubic inches
Example: convert 2 gallons to cubic inches:
2 × 231 = 462 cubic inches