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Single conversion
To convert from Gallon (gal) to Cubic inch (in3), use the following formula:
Let's convert 5 Gallon (gal) to Cubic inch (in3).
Using the formula:
Therefore, 5 Gallon (gal) is equal to Cubic inch (in3).
Here are some quick reference conversions from Gallon (gal) to Cubic inch (in3):
| Gallons | Cubic inches |
|---|---|
| 0.000001 gal | in3 |
| 0.001 gal | in3 |
| 0.1 gal | in3 |
| 1 gal | in3 |
| 2 gal | in3 |
| 3 gal | in3 |
| 4 gal | in3 |
| 5 gal | in3 |
| 6 gal | in3 |
| 7 gal | in3 |
| 8 gal | in3 |
| 9 gal | in3 |
| 10 gal | in3 |
| 20 gal | in3 |
| 30 gal | in3 |
| 40 gal | in3 |
| 50 gal | in3 |
| 100 gal | in3 |
| 1000 gal | in3 |
| 10000 gal | in3 |
For all Volume converters, choose units using the From/To dropdowns above.
A gallon (gal) is a unit of volume, most commonly associated with the imperial and US customary systems of measurement.
It is equal to 128 Fluid Ounces (fl-oz).
A common point of confusion is the difference between the US gallon and the imperial gallon (used in the UK and other Commonwealth nations).
They are not the same size!
This difference stems from historical definitions that were standardized differently in the US and Britain during the 18th and 19th centuries.
So, if you're comparing fuel efficiency, remember that "miles per gallon" ratings are based on different-sized gallons!
The word "gallon" has a rich history, tracing its roots back through several languages.
It originates from the Old Northern French word galon, which referred to a liquid measure.
This term is believed to have originated from the Gallo-Roman word gallēta, meaning a "pail" or "bucket." The ultimate origin likely goes back to a Celtic word, highlighting the unit's long-standing use in European trade and daily life for centuries.
While we typically associate the gallon with liquids, there is also a US dry gallon.
This unit, not commonly used today, is equivalent to one-eighth of a bushel, or about 4.405 liters. It was historically used to measure dry goods such as grain or fruit.
This is also why the famous "10-gallon hat" is a misnomer; its name doesn't refer to its volume.
Instead, it is thought to originate from the Spanish word galón, meaning "braid," which refers to the braided band on the hat.
A cubic inch (in3) is a unit of volume in the imperial and US customary systems of measurement.
One cubic inch is equal to about 0.554 fluid ounces (fl oz).
One cubic inch is precisely equal to 16.387064 cubic centimeters (cm3).
This exact conversion is legally defined and crucial in fields like engineering, science, and international manufacturing, where precision is paramount.
It enables the direct and accurate translation of volume measurements between the imperial system (common in the US) and the metric system, which is used worldwide.
The cubic inch is famously used to measure an engine's displacement (often abbreviated as CID), especially in American automotive history.
Engine displacement refers to the total volume of air and fuel that an engine's cylinders can move through in one cycle.
A higher CID, such as in the classic "454" (454 in3) V8 engines, typically meant more potential for power and torque, defining the era of American muscle cars.
To visualize a cubic inch, think of a small, common object.
A standard six-sided die used in board games is a perfect example, having a volume very close to one cubic inch.
A small sugar cube or a standard marble also provides a good real-world approximation of this unit of volume, making it easier to conceptualize its size beyond abstract numbers.