Cubic Feet Calculator – Calculate Volume in Cubic Feet Instantly
The cubic feet calculator makes it easy to find the volume of any rectangular space or object by entering its length, width, and height. Whether you're planning a construction project, estimating shipping costs, or figuring out how much mulch you need, knowing the cubic footage is essential. Simply choose your measurement unit, enter your dimensions, and get instant results in multiple volume formats.
Select the unit your measurements are in.
Enter the length of the space or object.
Enter the width of the space or object.
Enter the height or depth of the space or object.
Number of identical items or spaces (optional).
Your results will appear here
How to Use This Calculator
1. Select your measurement unit from the dropdown — choose feet, inches, yards, centimeters, or meters depending on how your dimensions are measured. 2. Enter the Length of the space or object in the Length field. 3. Enter the Width in the Width field. 4. Enter the Height or depth in the Height/Depth field. 5. If you have multiple identical spaces or items, enter the count in the Quantity field (default is 1). 6. The calculator instantly displays the volume in cubic feet along with conversions to cubic yards, cubic meters, cubic inches, and liters.
What Is a Cubic Foot?
A cubic foot (cu ft or ft³) is a unit of volume equal to a cube measuring 1 foot on each side. It is commonly used in the United States for measuring spaces, materials, and shipping containers. One cubic foot is equivalent to 1,728 cubic inches, 0.037 cubic yards, or approximately 28.317 liters.
How to Calculate Cubic Feet
The formula for calculating cubic feet from measurements already in feet is straightforward:
- Cubic Feet = Length (ft) × Width (ft) × Height (ft)
If your measurements are in other units, convert them to feet first before multiplying:
- Inches to feet: divide by 12
- Yards to feet: multiply by 3
- Centimeters to feet: multiply by 0.0328084
- Meters to feet: multiply by 3.28084
Volume Conversion Reference
Once you have your cubic footage, you can easily convert to other volume units:
- 1 cubic foot = 1,728 cubic inches
- 1 cubic foot = 0.037037 cubic yards
- 1 cubic foot = 0.028317 cubic meters
- 1 cubic foot = 28.3168 liters
- 1 cubic foot = 7.48052 US gallons
Common Uses for Cubic Feet Calculations
Construction and Concrete
Contractors calculate cubic footage to estimate concrete, fill dirt, gravel, or other materials needed for foundations, slabs, and trenches.
Landscaping
Gardeners and landscapers use cubic feet to determine how much mulch, topsoil, or compost is needed to cover a garden bed to a desired depth.
Shipping and Storage
Shipping companies use cubic footage to calculate the dimensional weight of packages. Storage unit renters use it to determine if their belongings will fit.
HVAC and Ventilation
HVAC professionals calculate room volume in cubic feet to properly size heating and cooling equipment for adequate air circulation.