Cubic Feet Calculator
Enter length, width, and height and pick a unit to get the volume in cubic feet.
Calculating volume in cubic feet
Volume is length times width times height. When your measurements are not already in feet, convert each one to feet first (12 inches = 1 foot, 1 yard = 3 feet, 1 meter ≈ 3.281 feet), then multiply. This tool does the conversion and multiplication automatically.
Common box & room sizes
24×24×24 inches · 18×18×24 inches · 16×16×16 inches · 12×12×12 inches · 20×20×20 inches · 10×10×8 feet · 12×12×8 feet · 8×8×8 feet
Frequently asked questions
How do I calculate cubic feet?
Multiply length × width × height with all three measurements in feet. This calculator converts inches, centimeters, meters, or yards to feet for you before multiplying.
How many cubic feet are in a cubic yard?
One cubic yard equals 27 cubic feet, because a yard is 3 feet and 3 × 3 × 3 = 27.
What is cubic feet used for?
Cubic feet measure volume — handy for shipping boxes, appliance capacity, soil or gravel, storage units, and freight.