Cubic Feet Calculator
Enter length, width, and height below to instantly get volume in cubic feet.
Volume
24 ft³
How to Calculate Cubic Feet
Cubic feet = length × width × height.
Worked example
A box 4 ft long, 3 ft wide, and 2 ft tall.
4 × 3 × 2 = 24
Volume: 24 ft³
Frequently Asked Questions
How do you calculate cubic feet?
Multiply length × width × height, all measured in feet: cubic feet = L × W × H.
How do you convert inches to cubic feet?
Convert each dimension to feet first (divide by 12), then multiply the three feet measurements together — or multiply in inches and divide the final cubic-inch result by 1,728 (12³).
What is cubic feet used for?
It measures volume — how much space something takes up or holds, commonly used for shipping boxes, storage units, soil/mulch quantities, and appliance capacities like refrigerators.
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