Cubic Feet to Gallons Converter

Enter the volume in cubic feet below to convert it to gallons.

Result in Gallons:

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1 ft³ = 7.480519 gal
Learn how we calculated this below

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Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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How to Convert Cubic Feet to Gallons

To convert a measurement in cubic feet to a measurement in gallons, multiply the volume by the following conversion ratio: 7.480519 gallons/cubic foot.

Since one cubic foot is equal to 7.480519 gallons, you can use this simple formula to convert:

gallons = cubic feet × 7.480519

The volume in gallons is equal to the volume in cubic feet multiplied by 7.480519.

For example, here's how to convert 5 cubic feet to gallons using the formula above.
gallons = (5 ft³ × 7.480519) = 37.402597 gal

How Many Gallons Are in a Cubic Foot?

There are 7.480519 gallons in a cubic foot, which is why we use this value in the formula above.

1 ft³ = 7.480519 gal

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

What Is a Cubic Foot?

The cubic foot is a unit of volume that is equal to the space consumed by a cube having sides one foot on each edge.

The cubic foot is a US customary and imperial unit of volume. A cubic foot is sometimes also referred to as a cubic ft. Cubic feet can be abbreviated as ft³, and are also sometimes abbreviated as cu foot, cu ft, or CF. For example, 1 cubic foot can be written as 1 ft³, 1 cu foot, 1 cu ft, or 1 CF.

You can calculate volume using a cubic footage calculator if you have the dimensions of a space or object.

Learn more about cubic feet.

What Is a Gallon?

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[1] 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.

Learn more about gallons.

Cubic Foot to Gallon Conversion Table

Table showing various cubic foot measurements converted to gallons.
Cubic Feet Gallons
1 ft³ 7.4805 gal
2 ft³ 14.96 gal
3 ft³ 22.44 gal
4 ft³ 29.92 gal
5 ft³ 37.4 gal
6 ft³ 44.88 gal
7 ft³ 52.36 gal
8 ft³ 59.84 gal
9 ft³ 67.32 gal
10 ft³ 74.81 gal
11 ft³ 82.29 gal
12 ft³ 89.77 gal
13 ft³ 97.25 gal
14 ft³ 104.73 gal
15 ft³ 112.21 gal
16 ft³ 119.69 gal
17 ft³ 127.17 gal
18 ft³ 134.65 gal
19 ft³ 142.13 gal
20 ft³ 149.61 gal
21 ft³ 157.09 gal
22 ft³ 164.57 gal
23 ft³ 172.05 gal
24 ft³ 179.53 gal
25 ft³ 187.01 gal
26 ft³ 194.49 gal
27 ft³ 201.97 gal
28 ft³ 209.45 gal
29 ft³ 216.94 gal
30 ft³ 224.42 gal
31 ft³ 231.9 gal
32 ft³ 239.38 gal
33 ft³ 246.86 gal
34 ft³ 254.34 gal
35 ft³ 261.82 gal
36 ft³ 269.3 gal
37 ft³ 276.78 gal
38 ft³ 284.26 gal
39 ft³ 291.74 gal
40 ft³ 299.22 gal

References

  1. 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

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