# Cubic Inches to Gallons Conversion

Enter the volume in cubic inches below to get the value converted to gallons.

**Results in Gallons:**

## How to Convert Cubic Inches to Gallons

To convert a cubic inch measurement to a gallon measurement, divide the volume by the conversion ratio. One gallon is equal to 231 cubic inches, so use this simple formula to convert:

The volume in gallons is equal to the cubic inches divided by 231.

**For example,**here's how to convert 500 cubic inches to gallons using the formula above.

Cubic inches and gallons are both units used to measure volume. Keep reading to learn more about each unit of measure.

## Cubic Inches

A cubic inch is a unit of volume equal to the space consumed by a cube with sides that are one inch in all directions.
One cubic inch is equivalent to about 16.387 cubic centimeters or 0.554 fluid ounces.^{[1]}

The cubic inch is a US customary and imperial unit of volume. A cubic inch is sometimes also referred to as a cubic in. Cubic inches can be abbreviated as *in³*, and are also sometimes abbreviated as *cu inch*, *cu in*, or *CI*. For example, 1 cubic inch can be written as 1 in³, 1 cu inch, 1 cu in, or 1 CI.

## Gallons

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.^{[2]} The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.

The gallon is a US customary unit of volume. Gallons can be abbreviated as *gal*; for example, 1 gallon can be written as 1 gal.

## Cubic Inch to Gallon Conversion Table

Cubic Inches | Gallons |
---|---|

1 in³ | 0.004329 gal |

2 in³ | 0.008658 gal |

3 in³ | 0.012987 gal |

4 in³ | 0.017316 gal |

5 in³ | 0.021645 gal |

6 in³ | 0.025974 gal |

7 in³ | 0.030303 gal |

8 in³ | 0.034632 gal |

9 in³ | 0.038961 gal |

10 in³ | 0.04329 gal |

20 in³ | 0.08658 gal |

30 in³ | 0.12987 gal |

40 in³ | 0.17316 gal |

50 in³ | 0.21645 gal |

60 in³ | 0.25974 gal |

70 in³ | 0.30303 gal |

80 in³ | 0.34632 gal |

90 in³ | 0.38961 gal |

100 in³ | 0.4329 gal |

200 in³ | 0.865801 gal |

300 in³ | 1.2987 gal |

400 in³ | 1.7316 gal |

500 in³ | 2.1645 gal |

600 in³ | 2.5974 gal |

700 in³ | 3.0303 gal |

800 in³ | 3.4632 gal |

900 in³ | 3.8961 gal |

1,000 in³ | 4.329 gal |

## References

- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf
- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf