Exploring Cubic Feet: A Comprehensive Guide

The cubic foot is a unit of volume frequently used in the United States and some European countries. It expresses the amount of space that an object occupies in three dimensions. Cubic feet are essential for anyone who wants to perform volume calculations.


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Let’s delve into the concept of cubic feet, learn how to calculate them, and explore their practical applications. We will make this concept more understandable for our readers by using numerous examples.


What is Cubic Feet (Cu ft)?

A cubic foot (Cu ft or ft3) is the volume of space that can be contained within a cube measuring one foot on all sides. Imagine a box that is 1 foot in length; 1 foot in width; and 1 foot in height. The volume of this box would be one cubic foot. One cubic foot is approximately equivalent to 28.3 liters or roughly 0.03 cubic meters.

This measurement is highly valuable for determining the volume of large objects or spaces. It finds frequent application in industries like construction and shipping to make decisions about space requirements.

Cubic Feet Formula

The formula to determine the space occupied by a cubic shape is expressed as follows.

Volume in cubic feet = Length x Width x Height


  • Length is the distance from one end to the other in a straight line.
  • The width is orthogonal (perpendicular) to the length.
  • Height is the measurement from the bottom of a substance to the top.

Steps of Calculating Cubic Feet

Below are the steps to calculate cubic feet ↱ of any cuboid object.

Step 1: Measure the length, width, and height of the object in feet.

Step 2: Multiply the three dimensions together to calculate the volume.

Step 3: Express the resulting volume in cubic feet.

cubic feet

1 ft × 1ft × 1ft = 1 ft3

Converting other units of volume to cubic feet

To calculate the volume of cubic feet, it is not necessary to measure the dimensions in feet. We can convert any unit of measurement’s dimensions to feet. Let’s examine each of the many possibilities separately.

Other measurement UnitsConversion FactorConversion To Cubic Foot
Cubic Inches1 cubic foot = 1728 cubic inchesCubic Feet = Cubic Inches / 1728
Cubic Meter (m3)1 cubic meter = 35.3147 cubic feetCubic Feet = Cubic Meters × 35.3147
Cubic Centimeters1 cubic foot = 28316.8 cubic centimetersCubic Centimeters / 28316.8
Cubic Yard1 cubic yard = 27 cubic feetCubic Feet = Cubic Yards × 27

These measurements provide the tools to compute the volume of a cubic foot; no matter which unit is used for the dimensions ↱.

Example: Calculate the Volume of a cubic box with measurements of 5 meters in length, 7 meters in width, and 9 meters in height.


The volume of the cubic box = 5 × 7 × 9 = 315 m3

As we know

1 m3 = 35.3147 cubic feet

The volume of the cubic box with the given dimension is 11124.1305 ft3.

Solved Cubic Feet Examples

Here are some solved examples of cubic feet (ft³) to help you understand how this unit of measurement works:

Example 1:

Calculate the volume of a room in cubic feet that measures 12 feet in length, 10 feet in width, and 8 feet in height.


Identify the measurements:

Length = 12 feet

Width = 10 feet

Height = 8 feet

We will use the formula for the volume of a rectangular room, which is:

Volume = Length × Width × Height

Substitute the given values:

Volume = 12 feet × 10 feet × 8 feet = 960 ft³

Thus, the volume of the room in cubic feet is 960.

Example 2:

A storage container that measures 4 yards in length, 2.5 yards in width, and 2 yards in height. Compute the volume in cubic feet.


We need to convert the measurements from yards to feet to find the volume in cubic feet.

∴ 1 yard is equal to 3 feet.

Length in feet = 4 yards × 3 feet/yard = 12 feet

Width in feet = 2.5 yards × 3 feet/yard = 7.5 feet

Height in feet = 2 yards × 3 feet/yard = 6 feet

Volume in cubic feet = Length × Width × Height

Volume = 12 feet × 7.5 feet × 6 feet = 540 cubic feet

Therefore, the volume of the storage container is 540 ft3.


In this article, we explored the definition and explanation of cubic feet. We learned that it is a unit of measurement used to determine volume in three-dimensional objects. We have provided a comprehensive guide on how to calculate cubic feet and convert measurements from other units to this standard.


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