### What is Volume?

In this article, we will learn how to calculate volume in gallons but before that, lets define volume. Volume can be defined as the 3-dimensional space enclosed by a boundary or occupied by an object or simply how much space an object takes up.

Often, the volume of a liquid such as milk or water is measured in gallons. In our case we will learn how to calculate volume in U.S. (United States) gallons.

### Formula to Calculate Volume in Gallons.

Conversion factors for some of the cubic units include;

**1m ³** **= 264.172 gallons.**

This means, to convert cubic meters (m) into gallons, you multiply the cubic meters by 264.172.

**1 ft³ = 7.48052 gallons**.

This states that, to convert cubic feet (ft) into gallons, we multiply the cubic feet by 7.48052.

**1 gallon = 231 in³** **.**

It means that, to convert cubic inches (in) into gallons, we divide the cubic inches by 231.

**1 gallon = 3,785.41** **cm³** **.**

This means that, to convert cubic centimeters into gallons, we divide the cubic centimeters by 3,785.41.

In conclusion, we have established that every cubic unit has a different conversion factor.

**Example 1:**

How many gallons of water can fit in a tank with a radius of 2 m and a height of 8 m.

Here, we’ll start by finding the volume of the tank.

Therefore, the volume of the tank is 100.544 m³.

We proceed by converting the volume into gallons. We do this by multiplying the volume by 264.172.

Hence, the volume of the tank in gallons is 26,560.91 gallons.

**Example 2:**

Suppose you are given the volume of an aquarium to be 1525cm^{3}.

Since 1 gallon is equal to 3,785.41 cm³ therefore,

**= 1525 ÷** **3.785.41**

**= 402.86 gallons**