📦 Cubic Feet Calculator
Find the volume of a box, room, or space in cubic feet by entering its length, width, and height.
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What is cubic feet?
Cubic feet is a unit of volume representing a cube one foot on each side. It’s commonly used to describe the capacity of appliances, storage spaces, shipping volumes, and construction materials like soil, mulch, or concrete.
How this calculator works
Enter the length, width, and height of the space or object, and choose the unit you measured in. The calculator converts each dimension to feet, then multiplies length by width by height to get the volume in cubic feet. It also shows the result in cubic yards, cubic meters, and liters.
- Formula: Volume = Length × Width × Height
- 1 cubic foot ≈ 0.0283 cubic meters
- 1 cubic foot ≈ 28.32 liters
This tool assumes a rectangular (box-shaped) space. For irregular shapes, break the area into rectangular sections and sum the volumes.
Last reviewed August 2026