How to Calculate Cubic Feet
What is Cubic Feet?
Cubic feet is a unit of volume equal to a cube with sides of 1 foot. 1 cubic foot = 1,728 cubic inches = 28.317 liters = 7.481 US gallons. Commonly used for shipping, refrigerator capacity, concrete orders, and room volume.
Step-by-Step Guide
- 1Volume (cu ft) = Length (ft) × Width (ft) × Height (ft)
- 21 cubic yard = 27 cubic feet
- 31 cubic meter = 35.315 cubic feet
- 4For concrete: ordered in cubic yards (1 yd³ = 27 ft³)
Worked Examples
Input
Room 10 ft × 12 ft × 8 ft
Result
Volume = 960 cubic feet
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